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Sergeant Stubby, an American dog who served as the mascot of America's 102nd Infantry Regiment during the First World War. (Photo by Bettmann via Getty Images)

First World War

Sergeant Stubby of the First World War: the heroic story of America’s most decorated war dog

Funeral of Swedish Prime Minister Olof Palme

Who killed Olof Palme?

Jared Diamond (Photo by Jochen Braun)

Jared Diamond on countries in crisis. This is a premium piece of content available to subscribed users.

A Victorian lady washing in the nude

In pictures: erotic postcards of the early 20th century

The name Archie was originally a nickname for Archibald, which derived from the Anglo-Saxon name Eorconbeald, and the Old High German name Erchenbald, says Carolyn Harris. (Photo by Dominic Lipinski - WPA Pool/Getty Images)

Archie Harrison Mountbatten-Windsor: the history behind the royal baby name. This is a premium piece of content available to subscribed users.

Paul Morland (Photo by Fran Monks)

How population has shaped world history. This is a premium piece of content available to subscribed users.

Japanese troops celebrate the capture of a British artillery position, Hong Kong, December 1941 (Mondadori Portfolio via Getty Images)

The lion and the rising sun: Britain and Japan's 400-year relationship. This is a premium piece of content available to subscribed users.

Bemused families in Narodychi, Ukraine watch neighbours preparing to leave home shortly after the nuclear accident at Chernobyl, just 50 miles (80km) to the east. The Soviet state proposed to re-house rural inhabitants in badly affected districts, but many preferred to stay despite (or perhaps unaware of the danger of) the high radiation detected by Geiger counters. (Photo by Igor Kostin/Sygma via Getty Images)

Eyewitness account: the aftermath of the 1986 Chernobyl disaster. This is a premium piece of content available to subscribed users.

President Abraham Lincoln visiting soldiers encamped at the Civil War battlefield of Antietam in Maryland, 1 October 1862. (Photo by Rischgitz/Getty Images)

The American Civil War: 7 facts and fictions. This is a premium piece of content available to subscribed users.

c1943: Soldiers enjoy a baseball match at Wembley Stadium in London between the United States Army and Canadian Forces. With them sits Bobby, the mascot of the Canadian Highland Scottish regiment. (Photo by Hulton-Deutsch Collection/CORBIS/Corbis via Getty Images)

Animals at war: 12 amazing pictures

A young visitor looks at a painting depicting the Amritsar Massacre

Amritsar: day of shame. This is a premium piece of content available to subscribed users.

A French print by the Thierry bothers depicting the appearance of the landscape and inhabitants of the Moon

How to carry off a great hoax. This is a premium piece of content available to subscribed users.

Perkin Warbeck, an imposter and pretender to the English throne, being humiliated in the stocks before his execution in 1499. Warbeck was used by Henry VII’s Yorkist enemies in an unsuccessful plot to threaten the new Tudor dynasty. (Getty Images)

Imposters in history: 16 famous con-artists and pretenders. This is a premium piece of content available to subscribed users.

Passengers reading a newspaper while waiting to disembark from the 'Empire Windrush' at Tilbury, having sailed from Jamaica, taken by an unknown photographer for the Daily Herald newspaper, 21 June 1948. "The Windrush scandal would have been inconceivable if we knew that those we are deporting not only helped to build the welfare state but were either born as, or to subjects of, the British state", says Professor Kehinde Andrews. (Photo by Daily Herald Archive/SSPL/Getty Images)

Do we need to decolonise history? And if so, how?. This is a premium piece of content available to subscribed users.

BBC History Magazine’s ‘ordinary’ people tweet: a response

(Photo by Alamy)

Brexit lessons from history. This is a premium piece of content available to subscribed users.

A painting depicting the Mexican-American War of 1846–48: battle of Buena Vista, also known as battle of Angostura. Since that traumatic war, the US-Mexico bilateral relationship "has experienced sharp ups-and-downs; but there have also been underlying continuities," says Professor Alan Knight. (Photo by Universal History Archive/Getty Images)

Peace, stability and pragmatism: a brief history of US-Mexico relations. This is a premium piece of content available to subscribed users.

Comedian Rhona Cameron and political activist Peter Tatchell help to hold a banner at an LGBT Pride event in London, 1998. (Photo by Steve Eason/Hulton Archive/Getty Images)

The historians’ view: is the world finally waking up to transgender issues?. This is a premium piece of content available to subscribed users.

"For those of noble birth who were condemned to die, execution by beheading (which was considered the least brutal method of execution) was used until the 18th century," says criminologist and historian Lizzie Seal. This illustration depicts the execution of Charles I in January 1649. (Photo by Hulton Archive/Getty Images)

A brief history of capital punishment in Britain

Rutger Bregman. (Photo by Maartje ter Horst)

Rutger Bregman: historian in the news. This is a premium piece of content available to subscribed users.

The Pied Piper of Hamelin. Illustration by Kate Greenaway, 1888. (Photo by Culture Club/Getty Images)

In pictures: fairytales through history

A cartoon from 'Punch' magazine (1903) titled 'Fidgety Joe', by Edward Linley Sambourne, depicting two parents representing the Duke of Devonshire and Arthur Balfour (centre), respective leaders of the Liberal Unionist and Conservative parties, trying to control their son, Joseph Chamberlain. In 1903, Joseph Chamberlain began his famous crusade for Imperial Preference – an issue which caused deep divisions in the government and ultimately paved the way for the Liberal Party's return to power in the 1906 general election. (Photo by Ann Ronan Pictures/Print Collector/Getty Images)

Brexit, the Corn Laws and the Common Market: a brief history of Britain’s trade deals. This is a premium piece of content available to subscribed users.

The regions of Britain in 1635, before the 1707 Acts of Union that united England and Scotland. (Photo by Universal History Archive/UIG via Getty Images)

“The anglocentric view we have of British history is unsustainable,” says Misha Glenny. This is a premium piece of content available to subscribed users.

Married architects Alison and Peter Smithson at work, October 1961. The pair were architect members of the Independent Group and had an impact on the British urban scene via what became known as ‘New Brutalism’. (Photo by Davies/Evening Standard/Getty Images)

Who were the original Independent Group?. This is a premium piece of content available to subscribed users.

Julian Baggini and Justin Champion. (Photo by Fran Monks)

A global history of philosophy. This is a premium piece of content available to subscribed users.

The former Edward VIII and Wallis Simpson, for whom Edward gave up the throne in 1936, sparking a crisis that rocked the British monarchy. The couple are pictured here in 1939. (Photo by Keystone-France\Gamma-Rapho via Getty Images)

The 7 most romantic moments in history. This is a premium piece of content available to subscribed users.

In 1877, a major rebellion in Kyushu concentrated the opposition of conservative elements to the westernization of Japan. (Photo by Asian Art/Getty Images)

The story of modern Japan. This is a premium piece of content available to subscribed users.

Code-breaking personnel at Bletchley Park, 1943. (Photo by Bletchley Park Trust/SSPL/Getty Images)

The evolution of British code-breaking. This is a premium piece of content available to subscribed users.

The Beatles with Ed Sullivan

How The Beatles broke America. This is a premium piece of content available to subscribed users.

English journalist and broadcaster Jenni Murray at the Edinburgh International Book Festival, 2017. (Photo by Roberto Ricciuti/Getty Images)

World-changing women. This is a premium piece of content available to subscribed users.