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Assassination of Archduke Franz Ferdinand and wife
On June 28th, 1914, the Archduke Franz Ferdinand and hs wife were murdered by Princip. This was tthe boiling point to WW1. -
Austria-Hungary declares war on Serbia
Austria-Hungary declared war on Serbia in 1914 after Serbia refused the list o demands. -
Germany declares war on France
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Great Britain declares war on Germany
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Germany invades Belgium
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Battle of Marne
The battle of Marne was a offensive attack by the French and British armies against the advancing German troops who invaded Belgium. -
Sinking of Lusitania
A German U-boat torpedoed the British passenger liner called the Lusiania that killed more than 1000 people and 128 Americans. This made the U.S. ferious and was a factor for the U.S. to join the war. -
Battle of Verdun
The battle of Verdun was arguably the lengthiest and greatest battle in world history.There had never been a battle with so many men on a tiny peice of land. There was a estimated 700,000 casualties and the battlefield was not even 10 kilometers big. -
Sussex pledge
The Sussex Pledge was a was a promise made by Germany after they sunk two ships that had Americans on it. This pledge stated that they would warn the ship before they shot it down. -
Battle of Somme
Also known as the Somme Offensive, this was one of the largest and bloodiest battles of the first world war. On the first day the British army suffered 57,000 casualties and in the end both sides suffered 1.5 million casualties. -
The Zimmerman Note is intercepted
On March 1st, a German message called the Zimmerman Note is intercepted by British agents. The message said that Germany wanted to make an alliance with Mexico if the U.S. entered the war, this made the U.S. ferious and was a factor for them to enter the war. -
Russian Revolution breaks out
In 1917, Vladimir Leninand overthrew the communist government and made the new government democratic. -
U.S. declares war against Germany
On April 6th, President Woodrow Wilson asked congress to declare war and congress granted his request and the U.S. was officially at war with Germany. Their were several factors that led up to this such as the sinking of Sussex and the sinking of Lusitania. -
Battle of Argonne Forest
This battle also known as the Maas-Argonne Offensive was one of the Aliie's last Offensive attacks of World War 1 and was fought on the Western Front. -
Germany declares war on Russia
Germany which was Austria-Hungary's allie declared war on Russia, which was Serbia's allie. The assassination of the Archduke started this event.
