World War I

Introducing German U-Boats

Feb 1, 1851

This was a naval ship created by Germany; which went underwater to secretly bomb ships. These U-Boats were also involved with the Sinking of the Lusitania, and the Sinking of the French Passenger ship, The Sussex.

Franz Ferdinand Assassination

Jun 28, 1914

Archduke Franz Ferdinand and his wife were assassinated while visiting Sarajevo, Bosnia. He was next on line for the Austro>
Hungarian throne. The killings set off decades old tensions in Europe and started WWI.

Sinking of the Lusitania

Mar 7, 1915

The Lusitania was a British passenger line ship. German U-Boats Torpedoed the ship 2 times. More than 1,000 people died when the Lusitania sank. 128 americans were dead.

U.S. enters WWI

Apr 6, 1916

Mostly, America was neutral during most parts of WWI. But, they joined the Allies when they entered the war. America's entry into the was had an immediate impact.

First Use of Gas Mask

Jan 1, 1917

After Germans had introduced poison gas, the Allies began making them too. To protect themselves, soldiers began carrying gas mask. Gas masks helped from the poison gas from getting into their nose, mouth, or eyes.

Battle of Argonne Forest

Sep 26, 1918

This battle became the biggest attack in American history. The Battle of the Argonne Forest went on for nearly seven weeks. Many soldiers had struggled over the rigged, heavily-forested ground. There was rain, mud, barbed wire, and German machine gun fire hindered the Allies' advance. A lot of soldiers died in this battle. But early November, Allies had won the battle.

Treaty of Versailles

Jun 28, 1919

This treaty brought WW1 to an end. The treaty ended the was between Germany and the Allied Powers. The Allied Powers contained of America,The British Empire,France, Italy, and Japan.

Senate rejects League of Nations

Nov 19, 1919

The United States wouldn't ratify the treaty, or even join the League of Nations. The League of Nations also has a lot in common with The Treaty of Versailles.