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The assassination of Archduke Franz Ferdinand and his wife, Sophie, while they were visiting Sarajevo, Bosnia, a country recently annexed into the Austrian Empire. This was one of the key events that led to WWI. The U.S. declares it's neutrality. -
Great Britain Declares War on Germany.
President Woodrow Wilson declared U.S. neutrality. -
The Germany U-boat sank the ship Lusitania. a swift-moving British cruise liner traveling from New York to Liverpool, England. Of the 1,959 men, women, and children on board, 1,195 perished, including 123 Americans. The U.S. issues a warning. -
Woodrow Wilson was re-elected again for the second year as president, Promising to keep us out of war. -
British naval intelligence intercepted and decrypted a telegram sent by German Foreign Minister Arthur Zimmerman to the German Ambassador in Mexico City. Germany announced that it would resume unrestricted submarine warfare. This announcement helped precipitate American entry into the conflict. -
The crime was to protest, by speech or writing, U.S. entrance into the war. Another law provided for the deportation of aliens who opposed organized government or advocated the destruction of property. -
The first American troops land in France. -
The U.S. declared war against Germany. -
On November 11, 1918 an armistice was signed between the Germans and the Allies, ending World War I. -
The Versailles Peace Treaty was signed, meaning it officially ended WWI.