Mule Rearing African American Soldiers 1 Riveters gas masks doughboys with mules pilots in dress uniforms African American Officers The pilots

How the War Began

ON JUNE 28, 1914, a young Bosnian Serb named Gavrilo Princip shot and killed Archduke Franz Ferdinand, heir to the throne of Austria-Hungary, in Sarajevo, Bosnia. The assassination set off a chain of events that led to the start of World War I.

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