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History (derived from Ancient Greek ἱστορία (historía) 'inquiry; knowledge acquired by investigation') is the systematic study and documentation of the human past. History is an academic discipline which uses a narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians debate which narrative best explains an event, as well as the significance of different causes and effects. Historians debate the nature of history as an end in itself, and its usefulness in giving perspective on the problems of the present.

The period of events before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts or traditional oral histories, art and material artifacts, and ecological markers.

Stories common to a particular culture, but not supported by external sources (such as the tales surrounding King Arthur), are usually classified as cultural heritage or legends. History differs from myth in that it is supported by verifiable evidence. However, ancient cultural influences have helped create variant interpretations of the nature of history, which have evolved over the centuries and continue to change today. The modern study of history is wide-ranging, and includes the study of specific regions and certain topical or thematic elements of historical investigation. History is taught as a part of primary and secondary education, and the academic study of history is a major discipline in universities.

Herodotus, a 5th-century BCE Greek historian, is often considered the "father of history", as one of the first historians in the Western tradition, though he has been criticized as the "father of lies". Along with his contemporary Thucydides, he helped form the foundations for the modern study of past events and societies. Their works continue to be read today, and the gap between the culture-focused Herodotus and the military-focused Thucydides remains a point of contention or approach in modern historical writing. In East Asia a state chronicle, the Spring and Autumn Annals, was reputed to date from as early as 722 BCE, though only 2nd-century BCE texts have survived. The title "father of history" has also been attributed, in their respective societies, to Sima Qian, Ibn Khaldun, and Kenneth Dike. (Full article...)

Outline of history · Index
Featured articles are displayed here, which represent some of the best content on English Wikipedia.
  • Image 1 The first page of the MAUD Committee report, March 1941 The MAUD Committee was a British scientific working group formed during the Second World War. It was established to perform the research required to determine if an atomic bomb was feasible. The name MAUD came from a strange line in a telegram from Danish physicist Niels Bohr referring to his housekeeper, Maud Ray. The MAUD Committee was founded in response to the Frisch–Peierls memorandum, which was written in March 1940 by Rudolf Peierls and Otto Frisch, two physicists who were refugees from Nazi Germany working at the University of Birmingham under the direction of Mark Oliphant. The memorandum argued that a small sphere of pure uranium-235 could have the explosive power of thousands of tons of TNT. (Full article...)
    The first page of the MAUD Committee report, March 1941

    The MAUD Committee was a British scientific working group formed during the Second World War. It was established to perform the research required to determine if an atomic bomb was feasible. The name MAUD came from a strange line in a telegram from Danish physicist Niels Bohr referring to his housekeeper, Maud Ray.

    The MAUD Committee was founded in response to the Frisch–Peierls memorandum, which was written in March 1940 by Rudolf Peierls and Otto Frisch, two physicists who were refugees from Nazi Germany working at the University of Birmingham under the direction of Mark Oliphant. The memorandum argued that a small sphere of pure uranium-235 could have the explosive power of thousands of tons of TNT. (Full article...)
  • Image 2 Eardwulf (fl. 790 – c. 830) was king of Northumbria from 796 to 806, when he was deposed and went into exile. He may have had a second reign from 808 until perhaps 811 or 830. Northumbria in the last years of the eighth century was the scene of dynastic strife between several noble families: in 790, king Æthelred I attempted to have Eardwulf assassinated. Eardwulf's survival may have been viewed as a sign of divine favour. A group of nobles conspired to assassinate Æthelred in April 796 and he was succeeded by Osbald: Osbald's reign lasted only twenty-seven days before he was deposed and Eardwulf became king on 14 May 796. Little is recorded of Eardwulf's family, though his father, also named Eardwulf, is known to have been a nobleman. Eardwulf was married by the time he became king, though his wife's name is not recorded. It is possible he later wed an illegitimate daughter of Charlemagne. In 798, early in his reign, Eardwulf fought a battle at Billington Moor against a nobleman named Wada, who had been one of those who killed King Æthelred. Wada was defeated and driven into exile. In 801, Eardwulf led an army against Coenwulf of Mercia, perhaps because of Coenwulf's support for other claimants to the Northumbrian throne. (Full article...)
    Eardwulf (fl. 790 – c. 830) was king of Northumbria from 796 to 806, when he was deposed and went into exile. He may have had a second reign from 808 until perhaps 811 or 830. Northumbria in the last years of the eighth century was the scene of dynastic strife between several noble families: in 790, king Æthelred I attempted to have Eardwulf assassinated. Eardwulf's survival may have been viewed as a sign of divine favour. A group of nobles conspired to assassinate Æthelred in April 796 and he was succeeded by Osbald: Osbald's reign lasted only twenty-seven days before he was deposed and Eardwulf became king on 14 May 796.

    Little is recorded of Eardwulf's family, though his father, also named Eardwulf, is known to have been a nobleman. Eardwulf was married by the time he became king, though his wife's name is not recorded. It is possible he later wed an illegitimate daughter of Charlemagne. In 798, early in his reign, Eardwulf fought a battle at Billington Moor against a nobleman named Wada, who had been one of those who killed King Æthelred. Wada was defeated and driven into exile. In 801, Eardwulf led an army against Coenwulf of Mercia, perhaps because of Coenwulf's support for other claimants to the Northumbrian throne. (Full article...)
  • Image 3 Illustration from "The House that Jack Built" in The Complete Collection of Pictures & Songs; engraving and printing by Edmund Evans, illustration by Randolph Caldecott (1887) Edmund Evans (23 February 1826 – 21 August 1905) was an English wood-engraver and colour printer during the Victorian era. He specialized in full-colour printing, a technique which, in part because of his work, became popular in the mid-19th century. He employed and collaborated with illustrators such as Walter Crane, Randolph Caldecott, Kate Greenaway and Richard Doyle to produce what are now considered to be classic children's books. Little is known about his life, although he wrote a short autobiography before his death in 1905 in which he described his life as a printer in Victorian London. After finishing an apprenticeship, Evans went into business for himself. By the early 1850s, he had established a reputation as a printer of covers for a type of cheap novels known as yellow-backs. In the early 1860s, he began to print children's toy books and picture books in association with the printing house Routledge and Warne. His intention was to produce books for children that were beautiful and inexpensive. For three decades he produced multiple volumes each year, first illustrated by Crane, and later by Caldecott and Greenaway. (Full article...)
    illustration of crowing rooster facing the rising sun with a man, dressed in nightcap and sleeping gown, leaning out the window. Background shows two small figures walking along a fenced road.
    Illustration from "The House that Jack Built" in The Complete Collection of Pictures & Songs; engraving and printing by Edmund Evans, illustration by Randolph Caldecott (1887)


    Edmund Evans (23 February 1826 – 21 August 1905) was an English wood-engraver and colour printer during the Victorian era. He specialized in full-colour printing, a technique which, in part because of his work, became popular in the mid-19th century. He employed and collaborated with illustrators such as Walter Crane, Randolph Caldecott, Kate Greenaway and Richard Doyle to produce what are now considered to be classic children's books. Little is known about his life, although he wrote a short autobiography before his death in 1905 in which he described his life as a printer in Victorian London.

    After finishing an apprenticeship, Evans went into business for himself. By the early 1850s, he had established a reputation as a printer of covers for a type of cheap novels known as yellow-backs. In the early 1860s, he began to print children's toy books and picture books in association with the printing house Routledge and Warne. His intention was to produce books for children that were beautiful and inexpensive. For three decades he produced multiple volumes each year, first illustrated by Crane, and later by Caldecott and Greenaway. (Full article...)
  • Image 4 An M48 Patton tank of the Spanish Army on display at the El Goloso Museum of Armored Vehicles in October 2007. Tanks in the Spanish Army have over 90 years of history, from the French Renault FTs first delivered in 1919 to the Leopard 2 and B1 Centauro models of the early 21st century. The Spanish FTs took part in combat during the Rif War and participated in the first amphibious landing with tanks in history, at Alhucemas. In 1925, the Spanish Army began to undertake a program to develop and produce a Spanish tank, an upgraded version of the Renault FT, called the Trubia A4. Although the prototype performed well during testing, the tank was never put into mass production. Spain also experimented with the Italian Fiat 3000, acquiring one tank in 1925, and with another indigenous tank program called the Landesa. However, none of these evolved into a major armor program, and as a result the FT remained the most important tank, in numbers, in the Spanish Army until the beginning of the Spanish Civil War. Between July 1936 and April 1939, during the Spanish Civil War, the two opposing armies received large quantities of tanks from foreign powers. Spain's Second Republic received tanks from the Soviet Union, many of which were captured by the Nationalists and pressed into service against their former masters, while the Nationalists were aided by the Germans and Italians. The Spanish Civil War, although the testing grounds for the nations which would ultimately take part in World War II, proved inconclusive with regard to the proof of mechanized warfare. Despite attempts by Soviet, German and Italian advisers and soldiers to use newly devised mechanized theories, the lack of quality crews and the tanks, and the insufficient number of tanks provided bad impressions on the usefulness of tanks on their own. (Full article...)
    An M48 Patton tank of the Spanish Army on display at the El Goloso Museum of Armored Vehicles in October 2007.

    Tanks in the Spanish Army have over 90 years of history, from the French Renault FTs first delivered in 1919 to the Leopard 2 and B1 Centauro models of the early 21st century. The Spanish FTs took part in combat during the Rif War and participated in the first amphibious landing with tanks in history, at Alhucemas. In 1925, the Spanish Army began to undertake a program to develop and produce a Spanish tank, an upgraded version of the Renault FT, called the Trubia A4. Although the prototype performed well during testing, the tank was never put into mass production. Spain also experimented with the Italian Fiat 3000, acquiring one tank in 1925, and with another indigenous tank program called the Landesa. However, none of these evolved into a major armor program, and as a result the FT remained the most important tank, in numbers, in the Spanish Army until the beginning of the Spanish Civil War.

    Between July 1936 and April 1939, during the Spanish Civil War, the two opposing armies received large quantities of tanks from foreign powers. Spain's Second Republic received tanks from the Soviet Union, many of which were captured by the Nationalists and pressed into service against their former masters, while the Nationalists were aided by the Germans and Italians. The Spanish Civil War, although the testing grounds for the nations which would ultimately take part in World War II, proved inconclusive with regard to the proof of mechanized warfare. Despite attempts by Soviet, German and Italian advisers and soldiers to use newly devised mechanized theories, the lack of quality crews and the tanks, and the insufficient number of tanks provided bad impressions on the usefulness of tanks on their own. (Full article...)
  • Image 5 The imperial ensign (basilikon phlamoulon) with the tetragrammic cross, carried by Byzantine warships in the 14th century, as described by Pseudo-Kodinos and illustrated in the Castilian atlas Conosçimiento de todos los reynos (c. 1350) The Byzantine navy was the naval force of the Byzantine Empire. Like the state it served, it was a direct continuation from its Roman predecessor, but played a far greater role in the defence and survival of the state than its earlier iteration. While the fleets of the Roman Empire faced few great naval threats, operating as a policing force vastly inferior in power and prestige to the army, command of the sea became vital to the very existence of the Byzantine state, which several historians have called a "maritime empire". The first threat to Roman hegemony in the Mediterranean Sea was posed by the Vandals in the 5th century, but their threat was ended by the wars of Justinian I in the 6th century. The re-establishment of a permanently maintained fleet and the introduction of the dromon galley in the same period also marks the point when the Byzantine navy began departing from its late Roman roots and developing its own characteristic identity. This process would be furthered with the onset of the early Muslim conquests in the 7th century. Following the loss of the Levant and later Africa, the Mediterranean was transformed from a "Roman lake" into a battleground between the Byzantines and a series of Muslim states. In this struggle, the Byzantine fleets were critical, not only for the defence of the Empire's far-flung possessions around the Mediterranean basin, but also for repelling seaborne attacks against the imperial capital of Constantinople itself. Through the use of the newly invented "Greek fire", the Byzantine navy's best-known and feared secret weapon, Constantinople was saved from several sieges and numerous naval engagements resulted in Byzantine victories. (Full article...)

    The imperial ensign (basilikon phlamoulon) with the tetragrammic cross, carried by Byzantine warships in the 14th century, as described by Pseudo-Kodinos and illustrated in the Castilian atlas Conosçimiento de todos los reynos (c. 1350)

    The Byzantine navy was the naval force of the Byzantine Empire. Like the state it served, it was a direct continuation from its Roman predecessor, but played a far greater role in the defence and survival of the state than its earlier iteration. While the fleets of the Roman Empire faced few great naval threats, operating as a policing force vastly inferior in power and prestige to the army, command of the sea became vital to the very existence of the Byzantine state, which several historians have called a "maritime empire".

    The first threat to Roman hegemony in the Mediterranean Sea was posed by the Vandals in the 5th century, but their threat was ended by the wars of Justinian I in the 6th century. The re-establishment of a permanently maintained fleet and the introduction of the dromon galley in the same period also marks the point when the Byzantine navy began departing from its late Roman roots and developing its own characteristic identity. This process would be furthered with the onset of the early Muslim conquests in the 7th century. Following the loss of the Levant and later Africa, the Mediterranean was transformed from a "Roman lake" into a battleground between the Byzantines and a series of Muslim states. In this struggle, the Byzantine fleets were critical, not only for the defence of the Empire's far-flung possessions around the Mediterranean basin, but also for repelling seaborne attacks against the imperial capital of Constantinople itself. Through the use of the newly invented "Greek fire", the Byzantine navy's best-known and feared secret weapon, Constantinople was saved from several sieges and numerous naval engagements resulted in Byzantine victories. (Full article...)
  • Image 6 U.S. Marines cross the Matanikau River on a raft ferry in November 1942 The Matanikau Offensive, from 1–4 November 1942, sometimes referred to as the Fourth Battle of the Matanikau, was an engagement between United States (U.S.) Marine and Army and Imperial Japanese Army forces around the Matanikau River and Point Cruz area on Guadalcanal during the Guadalcanal campaign of World War II. The action was one of the last of a series of engagements between U.S. and Japanese forces near the Matanikau River during the campaign. In the engagement, seven battalions of U.S. Marine and Army troops under the overall command of Alexander Vandegrift and tactical command of Merritt A. Edson, following up on the U.S. victory in the Battle for Henderson Field, crossed the Matanikau River and attacked Japanese Army units between the river and Point Cruz, on the northern Guadalcanal coast. The area was defended by the Japanese Army's 4th Infantry Regiment under Nomasu Nakaguma along with various other support troops, under the overall command of Harukichi Hyakutake. After inflicting heavy casualties on the Japanese defenders, U.S. forces halted the offensive and temporarily withdrew because of a perceived threat from Japanese forces elsewhere in the Guadalcanal area. (Full article...)

    U.S. Marines cross the Matanikau River on a raft ferry in November 1942

    The Matanikau Offensive, from 1–4 November 1942, sometimes referred to as the Fourth Battle of the Matanikau, was an engagement between United States (U.S.) Marine and Army and Imperial Japanese Army forces around the Matanikau River and Point Cruz area on Guadalcanal during the Guadalcanal campaign of World War II. The action was one of the last of a series of engagements between U.S. and Japanese forces near the Matanikau River during the campaign.

    In the engagement, seven battalions of U.S. Marine and Army troops under the overall command of Alexander Vandegrift and tactical command of Merritt A. Edson, following up on the U.S. victory in the Battle for Henderson Field, crossed the Matanikau River and attacked Japanese Army units between the river and Point Cruz, on the northern Guadalcanal coast. The area was defended by the Japanese Army's 4th Infantry Regiment under Nomasu Nakaguma along with various other support troops, under the overall command of Harukichi Hyakutake. After inflicting heavy casualties on the Japanese defenders, U.S. forces halted the offensive and temporarily withdrew because of a perceived threat from Japanese forces elsewhere in the Guadalcanal area. (Full article...)
  • Image 7 The Battle of Halidon Hill took place on 19 July 1333 when a Scottish army under Sir Archibald Douglas attacked an English army commanded by King Edward III of England (r. 1327–1377) and was heavily defeated. The year before, Edward Balliol had seized the Scottish Crown from five-year-old David II (r. 1329–1371), surreptitiously supported by Edward III. This marked the start of the Second War of Scottish Independence. Balliol was shortly expelled from Scotland by a popular uprising, which Edward III used as a casus belli, invading Scotland in 1333. The immediate target was the strategically-important border town of Berwick-upon-Tweed, which the English besieged in March. A large Scottish army advanced to relieve the town. They attempted and failed to draw the English away from Berwick. By mid-July, knowing Berwick was on the verge of surrender and aware they were much stronger than the English, the Scots attacked. They unsuccessfully manoeuvred for position and then launched an assault on the English, who had taken up a favourable defensive position. English longbowmen caused heavy Scottish casualties during their approach, and when the Scots came into contact with the English infantry, the fight was short. The Scottish formations collapsed and the Scots fled in disorder. The English men-at-arms mounted and pursued the Scots for 8 miles (13 km), causing further heavy casualties. The Scottish commander and many of the Scots' senior nobility were killed during the battle. (Full article...)
    The Battle of Halidon Hill took place on 19 July 1333 when a Scottish army under Sir Archibald Douglas attacked an English army commanded by King Edward III of England (r. 1327–1377) and was heavily defeated. The year before, Edward Balliol had seized the Scottish Crown from five-year-old David II (r. 1329–1371), surreptitiously supported by Edward III. This marked the start of the Second War of Scottish Independence. Balliol was shortly expelled from Scotland by a popular uprising, which Edward III used as a casus belli, invading Scotland in 1333. The immediate target was the strategically-important border town of Berwick-upon-Tweed, which the English besieged in March.

    A large Scottish army advanced to relieve the town. They attempted and failed to draw the English away from Berwick. By mid-July, knowing Berwick was on the verge of surrender and aware they were much stronger than the English, the Scots attacked. They unsuccessfully manoeuvred for position and then launched an assault on the English, who had taken up a favourable defensive position. English longbowmen caused heavy Scottish casualties during their approach, and when the Scots came into contact with the English infantry, the fight was short. The Scottish formations collapsed and the Scots fled in disorder. The English men-at-arms mounted and pursued the Scots for 8 miles (13 km), causing further heavy casualties. The Scottish commander and many of the Scots' senior nobility were killed during the battle. (Full article...)
  • Image 8 The stolen helicopter, now on display On February 17, 1974, U.S. Army Private First Class Robert Kenneth Preston (1953–2009) took off in a stolen Bell UH-1B Iroquois "Huey" helicopter from Tipton Field, Maryland, and landed it on the South Lawn of the White House in a significant breach of security. Preston had enlisted in the Army to become a helicopter pilot. However, he did not graduate from the helicopter training course and lost his opportunity to attain the rank of warrant officer pilot. His enlistment bound him to serve four years in the Army, and he was sent to Fort Meade as a helicopter mechanic. Preston believed this situation was unfair and later said he stole the helicopter to show his skill as a pilot. Shortly after midnight, Preston, on leave, was returning to Tipton Field, south of Fort Meade. Thirty helicopters at the base were fueled and ready to fly; he took off in one without turning on its anti-collision lights or making the standard radio calls. The Maryland State Police were alerted. Preston flew southwest toward Washington, D.C., where he hovered close to the Lincoln Memorial and the Washington Monument and over the South Lawn of the White House. He then flew back toward Fort Meade with two Bell 206 JetRanger police helicopters and police cars in pursuit. After a chase over Maryland, he reversed course toward Washington again and entered the White House grounds. The Secret Service opened fire this time. Preston was lightly wounded, landed the helicopter, and was arrested and held in custody. (Full article...)

    The stolen helicopter, now on display

    On February 17, 1974, U.S. Army Private First Class Robert Kenneth Preston (1953–2009) took off in a stolen Bell UH-1B Iroquois "Huey" helicopter from Tipton Field, Maryland, and landed it on the South Lawn of the White House in a significant breach of security. Preston had enlisted in the Army to become a helicopter pilot. However, he did not graduate from the helicopter training course and lost his opportunity to attain the rank of warrant officer pilot. His enlistment bound him to serve four years in the Army, and he was sent to Fort Meade as a helicopter mechanic. Preston believed this situation was unfair and later said he stole the helicopter to show his skill as a pilot.

    Shortly after midnight, Preston, on leave, was returning to Tipton Field, south of Fort Meade. Thirty helicopters at the base were fueled and ready to fly; he took off in one without turning on its anti-collision lights or making the standard radio calls. The Maryland State Police were alerted. Preston flew southwest toward Washington, D.C., where he hovered close to the Lincoln Memorial and the Washington Monument and over the South Lawn of the White House. He then flew back toward Fort Meade with two Bell 206 JetRanger police helicopters and police cars in pursuit. After a chase over Maryland, he reversed course toward Washington again and entered the White House grounds. The Secret Service opened fire this time. Preston was lightly wounded, landed the helicopter, and was arrested and held in custody. (Full article...)
  • Image 9 Pobeda at anchor, probably about March 1904 Pobeda (Russian: Победа, lit. 'Victory') was the last of the three Peresvet-class pre-dreadnought battleships built for the Imperial Russian Navy at the end of the nineteenth century. The ship was assigned to the Pacific Squadron upon completion and based at Port Arthur from 1903. During the Russo-Japanese War of 1904–1905, she participated in the battles of Port Arthur and the Yellow Sea. Having escaped serious damage in these engagements, Pobeda was sunk by gunfire during the siege of Port Arthur, and then salvaged by the Japanese and placed into service under the name Suwo (周防). Rearmed and re-boilered by the Japanese, Suwo was reclassified by the Imperial Japanese Navy (IJN) as a coastal defense ship in 1908 and served as a training ship for several years. She was the flagship of the Japanese squadron that participated in the siege of Qingdao at the beginning of World War I and continued in that role until she became a gunnery training ship in 1917. The ship was disarmed in 1922 to comply with the terms of the Washington Naval Treaty and probably scrapped around that time. (Full article...)

    Pobeda at anchor, probably about March 1904

    Pobeda (Russian: Победа, lit. 'Victory') was the last of the three Peresvet-class pre-dreadnought battleships built for the Imperial Russian Navy at the end of the nineteenth century. The ship was assigned to the Pacific Squadron upon completion and based at Port Arthur from 1903. During the Russo-Japanese War of 1904–1905, she participated in the battles of Port Arthur and the Yellow Sea. Having escaped serious damage in these engagements, Pobeda was sunk by gunfire during the siege of Port Arthur, and then salvaged by the Japanese and placed into service under the name Suwo (周防).

    Rearmed and re-boilered by the Japanese, Suwo was reclassified by the Imperial Japanese Navy (IJN) as a coastal defense ship in 1908 and served as a training ship for several years. She was the flagship of the Japanese squadron that participated in the siege of Qingdao at the beginning of World War I and continued in that role until she became a gunnery training ship in 1917. The ship was disarmed in 1922 to comply with the terms of the Washington Naval Treaty and probably scrapped around that time. (Full article...)
  • Image 10 Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project. The test was of an implosion-design plutonium bomb, nicknamed "The Gadget", of the same design as the Fat Man bomb later detonated over Nagasaki, Japan, on August 9, 1945. Concerns about whether the complex Fat Man design would work led to a decision to conduct the first nuclear test. The code name "Trinity" was assigned by J. Robert Oppenheimer, the director of the Los Alamos Laboratory, possibly inspired by the poetry of John Donne. The test, both planned and directed by Kenneth Bainbridge, was conducted in the Jornada del Muerto desert about 35 miles (56 km) southeast of Socorro, New Mexico, on what was the Alamogordo Bombing and Gunnery Range (renamed the White Sands Proving Ground just before the test). The only structures originally in the immediate vicinity were the McDonald Ranch House and its ancillary buildings, which scientists used as a laboratory for testing bomb components. Fears of a fizzle prompted construction of "Jumbo", a steel containment vessel that could contain the plutonium, allowing it to be recovered; but ultimately Jumbo was not used in the test. On May 7, 1945, a rehearsal was conducted, during which 108 short tons (98 t) of high explosive spiked with radioactive isotopes was detonated. (Full article...)

    Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project. The test was of an implosion-design plutonium bomb, nicknamed "The Gadget", of the same design as the Fat Man bomb later detonated over Nagasaki, Japan, on August 9, 1945. Concerns about whether the complex Fat Man design would work led to a decision to conduct the first nuclear test. The code name "Trinity" was assigned by J. Robert Oppenheimer, the director of the Los Alamos Laboratory, possibly inspired by the poetry of John Donne.

    The test, both planned and directed by Kenneth Bainbridge, was conducted in the Jornada del Muerto desert about 35 miles (56 km) southeast of Socorro, New Mexico, on what was the Alamogordo Bombing and Gunnery Range (renamed the White Sands Proving Ground just before the test). The only structures originally in the immediate vicinity were the McDonald Ranch House and its ancillary buildings, which scientists used as a laboratory for testing bomb components. Fears of a fizzle prompted construction of "Jumbo", a steel containment vessel that could contain the plutonium, allowing it to be recovered; but ultimately Jumbo was not used in the test. On May 7, 1945, a rehearsal was conducted, during which 108 short tons (98 t) of high explosive spiked with radioactive isotopes was detonated. (Full article...)
  • Image 11 Artist's impression of a Normandie-class battleship The Normandie class consisted of five dreadnought battleships ordered for the French Navy in 1912–1913, Normandie, the lead ship, Flandre, Gascogne, Languedoc, and Béarn. The design incorporated a radical arrangement for the twelve 340 mm (13.4 in) main battery guns: three quadruple-gun turrets, the first of their kind, as opposed to the twin-gun turrets used by most other navies. The first four ships were to be fitted with an unusual hybrid propulsion system that used both steam turbines and triple-expansion steam engines to increase fuel efficiency. The ships were never completed due to shifting production requirements and a shortage of labor after the beginning of World War I in 1914. The first four ships were sufficiently advanced in construction to permit their launching to clear the slipways for other, more important work. Many of the guns built for the ships were converted for use by the Army. After the war, the French Navy considered several proposals to complete the ships, either as originally designed or modernized to account for lessons from the war. The weak French post-war economy forestalled these plans, and the first four ships were broken up. (Full article...)

    Artist's impression of a Normandie-class battleship

    The Normandie class consisted of five dreadnought battleships ordered for the French Navy in 1912–1913, Normandie, the lead ship, Flandre, Gascogne, Languedoc, and Béarn. The design incorporated a radical arrangement for the twelve 340 mm (13.4 in) main battery guns: three quadruple-gun turrets, the first of their kind, as opposed to the twin-gun turrets used by most other navies. The first four ships were to be fitted with an unusual hybrid propulsion system that used both steam turbines and triple-expansion steam engines to increase fuel efficiency.

    The ships were never completed due to shifting production requirements and a shortage of labor after the beginning of World War I in 1914. The first four ships were sufficiently advanced in construction to permit their launching to clear the slipways for other, more important work. Many of the guns built for the ships were converted for use by the Army. After the war, the French Navy considered several proposals to complete the ships, either as originally designed or modernized to account for lessons from the war. The weak French post-war economy forestalled these plans, and the first four ships were broken up. (Full article...)
  • Image 12 The Rudd Concession, a written concession for exclusive mining rights in Matabeleland, Mashonaland and other adjoining territories in what is today Zimbabwe, was granted by King Lobengula of Matabeleland to Charles Rudd, James Rochfort Maguire and Francis Thompson, three agents acting on behalf of the South African-based politician and businessman Cecil Rhodes, on 30 October 1888. Despite Lobengula's retrospective attempts to disavow it, it proved the foundation for the royal charter granted by the United Kingdom to Rhodes's British South Africa Company in October 1889, and thereafter for the Pioneer Column's occupation of Mashonaland in 1890, which marked the beginning of white settlement, administration and development in the country that eventually became Rhodesia, named after Rhodes, in 1895. Rhodes's pursuit of the exclusive mining rights in Matabeleland, Mashonaland and the surrounding areas was motivated by his wish to annex them into the British Empire as part of his personal ambition for a Cape to Cairo Railway—winning the concession would enable him to gain a royal charter from the British government for a chartered company, empowered to annex and thereafter govern the Zambezi–Limpopo watershed on Britain's behalf. He laid the groundwork for concession negotiations during early 1888 by arranging a treaty of friendship between the British and Matabele peoples and then sent Rudd's team from South Africa to obtain the rights. Rudd succeeded following a race to the Matabele capital Bulawayo against Edward Arthur Maund, a bidding-rival employed by a London-based syndicate, and after long negotiations with the king and his council of izinDuna (tribal leaders). (Full article...)

    The Rudd Concession, a written concession for exclusive mining rights in Matabeleland, Mashonaland and other adjoining territories in what is today Zimbabwe, was granted by King Lobengula of Matabeleland to Charles Rudd, James Rochfort Maguire and Francis Thompson, three agents acting on behalf of the South African-based politician and businessman Cecil Rhodes, on 30 October 1888. Despite Lobengula's retrospective attempts to disavow it, it proved the foundation for the royal charter granted by the United Kingdom to Rhodes's British South Africa Company in October 1889, and thereafter for the Pioneer Column's occupation of Mashonaland in 1890, which marked the beginning of white settlement, administration and development in the country that eventually became Rhodesia, named after Rhodes, in 1895.

    Rhodes's pursuit of the exclusive mining rights in Matabeleland, Mashonaland and the surrounding areas was motivated by his wish to annex them into the British Empire as part of his personal ambition for a Cape to Cairo Railway—winning the concession would enable him to gain a royal charter from the British government for a chartered company, empowered to annex and thereafter govern the Zambezi–Limpopo watershed on Britain's behalf. He laid the groundwork for concession negotiations during early 1888 by arranging a treaty of friendship between the British and Matabele peoples and then sent Rudd's team from South Africa to obtain the rights. Rudd succeeded following a race to the Matabele capital Bulawayo against Edward Arthur Maund, a bidding-rival employed by a London-based syndicate, and after long negotiations with the king and his council of izinDuna (tribal leaders). (Full article...)
  • Image 13 A Soviet postage stamp from 1959. The stamp celebrates growth in the chemical industry. During the Khrushchev era, especially from 1956 through 1962, the Soviet Union attempted to implement major wage reforms intended to move Soviet industrial workers away from the mindset of overfulfilling quotas that had characterised the Soviet economy during the preceding Stalinist period and toward a more efficient financial incentive. Throughout the Stalinist period, most Soviet workers had been paid for their work based on a piece-rate system. Thus their individual wages were directly tied to the amount of work they produced. This policy was intended to encourage workers to toil and therefore increase production as much as possible. The piece-rate system led to the growth of bureaucracy and contributed to significant inefficiencies in Soviet industry. In addition, factory managers frequently manipulated the personal production quotas given to workers to prevent workers' wages from falling too low. (Full article...)
    A Soviet postage stamp from 1959. The stamp celebrates growth in the chemical industry.

    During the Khrushchev era, especially from 1956 through 1962, the Soviet Union attempted to implement major wage reforms intended to move Soviet industrial workers away from the mindset of overfulfilling quotas that had characterised the Soviet economy during the preceding Stalinist period and toward a more efficient financial incentive.

    Throughout the Stalinist period, most Soviet workers had been paid for their work based on a piece-rate system. Thus their individual wages were directly tied to the amount of work they produced. This policy was intended to encourage workers to toil and therefore increase production as much as possible. The piece-rate system led to the growth of bureaucracy and contributed to significant inefficiencies in Soviet industry. In addition, factory managers frequently manipulated the personal production quotas given to workers to prevent workers' wages from falling too low. (Full article...)
  • Image 14 Taking one of the redoubts of Kehl by throwing rocks, 24 June 1796, Frédéric Regamey In the Rhine campaign of 1796 (June 1796 to February 1797), two First Coalition armies under the overall command of Archduke Charles outmaneuvered and defeated two French Republican armies. This was the last campaign of the War of the First Coalition, part of the French Revolutionary Wars. The French military strategy against Austria called for a three-pronged invasion to surround Vienna, ideally capturing the city and forcing the Holy Roman Emperor to surrender and accept French Revolutionary territorial integrity. The French assembled the Army of Sambre and Meuse commanded by Jean-Baptiste Jourdan against the Austrian Army of the Lower Rhine in the north. The Army of the Rhine and Moselle, led by Jean Victor Marie Moreau, opposed the Austrian Army of the Upper Rhine in the south. A third army, the Army of Italy, commanded by Napoleon Bonaparte, approached Vienna through northern Italy. (Full article...)

    Taking one of the redoubts of Kehl by throwing rocks, 24 June 1796, Frédéric Regamey

    In the Rhine campaign of 1796 (June 1796 to February 1797), two First Coalition armies under the overall command of Archduke Charles outmaneuvered and defeated two French Republican armies. This was the last campaign of the War of the First Coalition, part of the French Revolutionary Wars.

    The French military strategy against Austria called for a three-pronged invasion to surround Vienna, ideally capturing the city and forcing the Holy Roman Emperor to surrender and accept French Revolutionary territorial integrity. The French assembled the Army of Sambre and Meuse commanded by Jean-Baptiste Jourdan against the Austrian Army of the Lower Rhine in the north. The Army of the Rhine and Moselle, led by Jean Victor Marie Moreau, opposed the Austrian Army of the Upper Rhine in the south. A third army, the Army of Italy, commanded by Napoleon Bonaparte, approached Vienna through northern Italy. (Full article...)
  • Image 15 Sasanian-style silver dirham minted in Mu'awiya's name, c. 674 Mu'awiya I (Arabic: معاوية بن أبي سفيان, romanized: Muʿāwiya ibn Abī Sufyān; c. 597, 603 or 605–April 680) was the founder and first caliph of the Umayyad Caliphate, ruling from 661 until his death. He became caliph less than thirty years after the death of the Islamic prophet Muhammad and immediately after the four Rashidun ('rightly-guided') caliphs. Unlike his predecessors, who had been close, early companions of Muhammad, Mu'awiya was a relatively late follower of Muhammad. Mu'awiya and his father Abu Sufyan had opposed Muhammad, their distant Qurayshite kinsman and later Mu'awiya's brother-in-law, until Muhammad captured Mecca in 630. Afterward, Mu'awiya became one of Muhammad's scribes. He was appointed by Caliph Abu Bakr (r. 632–634) as a deputy commander in the conquest of Syria. He moved up the ranks through Umar's caliphate (r. 634–644) until becoming governor of Syria during the reign of his Umayyad kinsman, Caliph Uthman (r. 644–656). He allied with the province's powerful Banu Kalb tribe, developed the defenses of its coastal cities, and directed the war effort against the Byzantine Empire, including the first Muslim naval campaigns. In response to Uthman's assassination in 656, Mu'awiya took up the cause of avenging the murdered caliph and opposed the election of Ali. During the First Muslim Civil War, the two led their armies to a stalemate at the Battle of Siffin in 657, prompting an abortive series of arbitration talks to settle the dispute. Afterward, Mu'awiya gained recognition as caliph by his Syrian supporters and his ally Amr ibn al-As, who conquered Egypt from Ali's governor in 658. Following the assassination of Ali in 661, Mu'awiya compelled Ali's son and successor Hasan to abdicate and Mu'awiya's suzerainty was acknowledged throughout the Caliphate. (Full article...)

    Sasanian-style silver dirham minted in Mu'awiya's name, c. 674

    Mu'awiya I (Arabic: معاوية بن أبي سفيان, romanized: Muʿāwiya ibn Abī Sufyān; c. 597, 603 or 605–April 680) was the founder and first caliph of the Umayyad Caliphate, ruling from 661 until his death. He became caliph less than thirty years after the death of the Islamic prophet Muhammad and immediately after the four Rashidun ('rightly-guided') caliphs. Unlike his predecessors, who had been close, early companions of Muhammad, Mu'awiya was a relatively late follower of Muhammad.

    Mu'awiya and his father Abu Sufyan had opposed Muhammad, their distant Qurayshite kinsman and later Mu'awiya's brother-in-law, until Muhammad captured Mecca in 630. Afterward, Mu'awiya became one of Muhammad's scribes. He was appointed by Caliph Abu Bakr (r. 632–634) as a deputy commander in the conquest of Syria. He moved up the ranks through Umar's caliphate (r. 634–644) until becoming governor of Syria during the reign of his Umayyad kinsman, Caliph Uthman (r. 644–656). He allied with the province's powerful Banu Kalb tribe, developed the defenses of its coastal cities, and directed the war effort against the Byzantine Empire, including the first Muslim naval campaigns. In response to Uthman's assassination in 656, Mu'awiya took up the cause of avenging the murdered caliph and opposed the election of Ali. During the First Muslim Civil War, the two led their armies to a stalemate at the Battle of Siffin in 657, prompting an abortive series of arbitration talks to settle the dispute. Afterward, Mu'awiya gained recognition as caliph by his Syrian supporters and his ally Amr ibn al-As, who conquered Egypt from Ali's governor in 658. Following the assassination of Ali in 661, Mu'awiya compelled Ali's son and successor Hasan to abdicate and Mu'awiya's suzerainty was acknowledged throughout the Caliphate. (Full article...)
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Romney between 1963 and 1969

George Wilcken Romney (July 8, 1907 – July 26, 1995) was an American businessman and politician. A member of the Republican Party, he served as chairman and president of American Motors Corporation from 1954 to 1962, the 43rd governor of Michigan from 1963 to 1969, and 3rd secretary of Housing and Urban Development from 1969 to 1973. He was the father of Mitt Romney, who serves as one of the United States senators from Utah and formerly was a governor of Massachusetts and the 2012 Republican presidential nominee; the husband of 1970 U.S. Senate candidate Lenore Romney; and the paternal grandfather of former Republican National Committee chair Ronna McDaniel.

Romney was born to American parents living in the Mormon colonies in Mexico; events during the Mexican Revolution forced his family to flee back to the United States when he was a child. The family lived in several states and ended up in Salt Lake City, Utah, where they struggled during the Great Depression. Romney worked in a number of jobs, served as a Mormon missionary in the United Kingdom, and attended several colleges in the U.S. but did not graduate from any of them. In 1939, he moved to Detroit and joined the American Automobile Manufacturers Association, where he served as the chief spokesman for the automobile industry during World War II and headed a cooperative arrangement in which companies could share production improvements. He joined Nash-Kelvinator Corporation in 1948, and became the chief executive of its successor, American Motors, in 1954. There he turned around the struggling firm by focusing all efforts on the compact Rambler car. Romney mocked the products of the "Big Three" automakers as "gas-guzzling dinosaurs" and became one of the first high-profile, media-savvy business executives. Devoutly religious, he presided over the Detroit stake of the Church of Jesus Christ of Latter-day Saints. (Full article...)

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