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Loyalty to the interests and culture of one's country.

Rossevelt's Corollary



National policy of avoiding political or economic alliances with other countries.

Rough Riders

Theodore Roosevelt's volunteer force who fought in Cuba during the Spanish American War.


Passenger ship carrying military supplies which was destroyed by a German torpedo on May 7, 1915.

Francis Ferdinand


No man's land




Social Darwinism

The idea that only the strongest people, businesses, or nations are meant to survive.

Trench Warfare

Soldiers dig trenches and fight from there- used extensively in WWI.

Battle of Verdun



Government requirement to serve in the military.

Zimmerman Telegram


Treaty of Versailles



People who believed the United States should acquire overseas colonies in order to maintain a strong economy.


A person who comes into a new country.

Yellow Journalism

Sensational writing with disregard for the truth.

Open Door Policy

An agreement between the United States and European nations to keep China open to free trade.


German submarines that sank French and British merchant ships in the Atlantic.

Theodore Roosevelt

Leader of United States troops in Cuba during the Spanish-American War; later elected President of the United States (1901-1909).

Triple Alliance

Agreement of mutual protection between Germany, Austria-Hungary, and Italy.

War Reparations

Germany's payment of costs to the victorious nations for its part in starting World War I

League of Nations

The Treaty of Versailles established this organization in order to promote understanding and discourage aggressions between nations. It lost influence because the United States refused to join.

William C. Gorgas

United States Colonel who eradicated malaria and yellow fever in the Panama Canal Zone.

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