World War I

How did World War 1 begin? Who were the Allies and what countries made up the Central Powers? Let's find out.

This is a timeline of events during the second half of World War I, from 1916 to 1919. From the devastating Battle of the Somme to the introduction of U-boats and the eventual signing of the Treaty of Versailles, this period witnesses significant battles, shifting alliances, and the profound impact of the war on nations and their people.

This is a timeline of the first half of World War I, from 1882 to 1916, as alliances form, assassinations spark conflicts, and trench warfare becomes the norm. From the assassination of Archduke Franz Ferdinand and the brutal warfare on the Western Front, this war becomes a deadly struggle that shapes the course of history.

The sinking of the RMS Lusitania by a German U-boat in 1915, and the United States’ firm response, demonstrated America's readiness to end its isolationism to defend innocent lives.

In the early 20th century, as fascist regimes emerged across Europe and beyond, the United States adopted a policy of isolationism to protect American lives and economic interests.

The Treaty of Versailles ended World War I, but was not ratified by the U.S. Congress, leading to significant future implications for American foreign policy.

Following World War I, U.S. President Woodrow Wilson championed the League of Nations, setting the stage for the eventual creation of the United Nations to prevent future conflicts.

During World War I and II, American women stepped beyond traditional roles, contributing as cryptologists, mechanics, and even pilots, playing a crucial role in securing Allied victories.