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German Front Line Trenches

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Causes of World War I
Causes of World War I
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By 1914, military tensions and a series of alliances have Europe on the edge of war. In August, the fuse is lit by an assassination in Sarajevo. By war's end, more than 100 countries would be involved in the conflict.

Video Clip (2:17)
WWI Firsts
WWI Firsts
Video Clip (1:18)

WWI may have been the war to end all wars, but it was also the beginning of many military and civilian technologies.

Video Clip (1:18)
Treaty of Versailles Ends World War I
Treaty of Versailles Ends World War I
Video Clip (1:56)

German resentment over harsh peace terms leads to a rise in nationalist sentiment and the eventual rise to power of Adolf Hitler.

Video Clip (1:56)
Allies Launch Disastrous Attack at Gallipoli
Allies Launch Disastrous Attack at Gallipoli
Video Clip (1:39)

An ill-fated assault on Turkish forces leads to 500,000 casualties in World War I.

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Turkey's Buried City
Turkey's Buried City
Video Clip (3:48)

Evidence of a 12,000 year old civilization - almost 7,000 years older than Mesopotamia's fertile crescent - is unearthed in the Turkish countryside.

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Trench Warfare
Trench Warfare
Video Clip (1:14)

Although best known for its role in the long slog of World War I, trench warfare actually got its start on the battlefields of the American Civil War. Find out how new weapons and technology played a part in both its development and destruction.

Video Clip (1:14)