WWI

Schlieffen Plan

Germany's military strategy to avoid a two-front war by invading Belgium.

Trench Warfare

A type of combat where opposing troops fight from trenches facing each other, leading to stalemate.

No Man's Land

The area between opposing trenches where soldiers are vulnerable to being shot.

Zimmerman Note

A secret telegraph from Germany to Mexico proposing an alliance against the U.S.

Lusitania

A British passenger ship sunk by Germany, contributing to U.S. anger during WWI.

Sussex Pledge

Germany's promise to warn ships before attacking them, following the sinking of the Sussex.

Selective Service Act

The law that authorized the draft for military service during WWI.

Harlem Hellfighters

An African American regiment distinguished for their bravery during WWI.

Fourteen Points

President Wilson's plan for peace after WWI aimed at ensuring self-determination and preventing future wars.

Versailles Treaty

The peace treaty that ended WWI, imposing heavy reparations on Germany.

Espionage Act

A law that made it illegal to interfere with the military or promote disloyalty during WWI.

Sedition Act

A law that prohibited speech or actions that encouraged rebellion against the government.

Liberty Bonds

War bonds sold in the U.S. to raise money for the war effort.

Great Migration

The movement of African Americans from the rural South to the industrial North during and after WWI.

League of Nations

An international organization proposed by Wilson to settle disputes but lacked enforcement power.

Isolationism

A policy of non-interference in the affairs of other countries; the U.S. adopted this after WWI.

Propaganda

Information, especially biased or misleading, used to promote a political cause or viewpoint.

U-boats

German submarines used during WWI that attacked enemy and neutral ships.

Central Powers

The alliance of Germany, Austria-Hungary, and other nations opposing the Allies in WWI.

Redraw map, nine new nations

The post-WWI effort to create new countries from the empires that collapsed.