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A U.S. Army general who commanded the American Expeditionary Force in Europe during World War I.

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The 28th President of the United States whose terms lasted through World War I.

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A French statesman who played a key role in negotiating the Treaty of Versailles.

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A republican politician who fought with president Woodrow Wilson during the signing of the Treaty of Versailles.

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A British political leader of the late nineteenth and early twentieth centuries who was prime minister of Britain at the end of World War I.

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An independent agency of the government of the United States created to influence U.S. public opinion regarding American participation in World War I.

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A financier, political adviser, and a major administrator during World War I.

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An investigative journalist and writer, a politician and government official who served as the head of the United States Committee on Public Information.

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An act requiring all men in the U.S. between the ages of 21 and 30 to register for military service.

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A Untied States Supreme Court case concerning enforcement of the Espionage Act of 1917 during World War I.

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A United States government agency established to mediate labor disputes in wartime.

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An organization of nations that would work together in order to settle disputes, promote democracy, and prevent future wars.

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The creation of national governmental institutions by a group of people who view themselves as a distinct nation.

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Ideas or information spread in order to influence pubic opinion about the war.

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A war bond that was sold in the United States to support the allied cause in World War I.

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A message sent by Germany that proposed a military alliance between Germany and Mexico in the event that the United States declared war on Germany.

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A promise from Germany to the United States that they would not sink any more U.S. ships without warning.

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A document signed between Germany and the Allied Powers following World War I that officially ended that war.

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Compensation demanded by a victorious nation from a defeated nation.

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An archduke of Austria-Hungary who was assassinated by a Serbian terrorist.

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The last German Emperor and King of Prussia.

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A group of merchant vessels sailing together, with or without naval escort for mutual security and protection.

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People who believe in a system where all means of production are owned in common, rather than by individuals.

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The four main leaders of the peace talks in Paris after world war 1.

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A statement of principles for world peace that was to be used for peace negotiations in order to end World War I.

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An alliance between Germany, Austria-Hungary, and The Ottoman Empire.

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A German submarine used in World War 1.

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A British luxury liner sunk by a German submarine in the North Atlantic on May 7, 1915.

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A policy in which a nation avoids entanglement in foreign wars.

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A form of combat in which soldiers dug trenches, or deep ditches, to seek protection from enemy fire and to defend their positions.

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An alliance between Great Britain, France, and Russia.

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A system in which each nation or alliance has equal strength.

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A military alliance between Great Britain, France, and Russia.

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A military alliance between Germany, Austria-Hungary, and Italy.

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The expansion of arms and the policy of military preparedness.