World War I started on July 28, 1914 and ended on November 11, 1918.

• Start: Archduke Franz Ferdinand’s assassination on June 28, 1914 set off a chain of mobilizations and declarations of war, with Austria-Hungary declaring war on Serbia on July 28, 1914.

• End: An armistice signed on November 11, 1918 brought the fighting to a close, followed by various peace treaties and formal end-of-war processes in 1919.

If you’d like, I can provide a concise timeline of key events between 1914 and 1918 or explain how the war’s end led to the postwar settlement.