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World War I: Empires and Alliances

Related Article: Learn more about World War I.

Many nations, including the United States, stockpiled weapons and entered military alliances to support each other. By 1914, there were two major defense alliances.

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World War I: Taxes, and Liberty Bonds (1:04)

Daylight Savings Time was implemented to save energy while Liberty Bonds were, in essence, a loan to the government.

20th Century Battlefields: 1918 Western Front 2 (3:35)

In the first major American action of the war, US Marines take on a tenacious German defense in the Battle of Belleau Wood. Learn more about World War I in this video.

20th Century Battlefields: 1918 Western Front 1 (3:30)

In a last bid for victory before American troops can tip the balance, the Germans stage a massive blitzkrieg-like attack against the British lines. Learn more about World War I in this video.

World War I: Nationalism in Europe (2:23)

Nationalism went beyond simple patriotism for one's country. Some nations put their own interests ahead of world cooperation.

World War I: Empires and Alliances (1:46)

Many nations, including the United States, stockpiled weapons and entered military alliances to support each other. By 1914, there were two major defense alliances.

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20th Century Battlefields: 1918 Western Front 2 (3:35)

In the first major American action of the war, US Marines take on a tenacious German defense in the Battle of Belleau Wood. Learn more about World War I in this video.

20th Century Battlefields: 1918 Western Front 1 (3:30)

In a last bid for victory before American troops can tip the balance, the Germans stage a massive blitzkrieg-like attack against the British lines. Learn more about World War I in this video.