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The Assassination of Archduke Franz Ferdinand
He was shot and killed in order to gain land. -
World War 1 Begins
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Germans Fire
The Germans fire shells filled with chlorine gas at Allied lines. -
US joins the WWI-The Sinking of the Lusitania
German U-boats, or submarines, sunk ships going between England and America. More than 100 Americans were killed. -
The Zimmermann Telegram
Arthur Zimmermann, a German leader, sent a telegram to Mexico asking the country to start a border war with the United States. -
The United States Enters the War
After the Zimmermann Telegram, Wilson asked Congress for a declaration of war.Wilson said the United States must go to war because the world “must be made safe for democracy.” -
World War 1 Ends