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Assassination of Franz Ferdinand
The heir to the Austro-Hungarain throne, and Archduke. He visited the Bosian capital of Sarajevo. As he adn his wife rode through the city, a Bosnain revolutionary named Gavrilo princip rushed their car open and shot the couple. -
Austria-Hungary decalres war on Serbia
When Austria declared war of Serbia, Russia immediately mobilized its army, including troops stationed on the German border. -
Germany declares war on Russia
Germany had been long perpared for war against France and Russia, with a massive plan of invasion. -
Germany declares war of France
Germany declared war on France but their plan had one major problem. it required German force4s to advance through neutral Belgium in order to encircle the French troops. -
Germany invades Belgium
The British had guaranteed Belgiums neutrality. -
Great Britain declares war on Germany
After German troops crossed the Belgian Frontier, Britain declared war on Germany. -
Austria-Hungary declares war on Russia
Austria-Hungary declared war on Russia because Russia was helping defend Serbia. -
France and Great Britain declare war on Austria-Hungary
Austria-Hungary, declares war on Russia and demands the neutrality of Russia's ally France; France refuses and mobilises. -
Lusitania is sunk
German U-boats sank the passenger liner Lusitania. Among those who drowned were 128 Americans. -
Zimmerman Telegram
The Zimmermann Telegram was a 1917 diplomatic proposal from the German Empire to Mexico to make war against the United States. -
US declares war on Germany
On April 6, Congress granted the request and the United States was formally at war with Germany. Several key events leading up to this act included the sinking of the Lusitania in 1915, and the Zimmerman Telegram sent to Mexico by Germany in January 1917.
