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(Image by Bettmann/Getty)

10 photographs that made history

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Nancy Astor. (Photo by Getty Images)

Rachel Reeves on women who changed politics . This is a premium piece of content available to subscribed users.

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?

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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

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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

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

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

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

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

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