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This was a major driving force leading to World War I. After this Austria-Hungary declared war on Serbia because they thought that Serbia planned the assassination. When really it was a Serbian terrorist group.
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This battle was the first battle to use radio intercepts. It was the French against the Germans. It was fought to the North and East of Paris. The Allies won.
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The Germans were not happy that the Americans were only trading with Great Britain. So a German U-boat torpedoed and sank the Lusitania. They did this because it was a British passenger ship carrying Americans. This angered the U.S.
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Germany wanted to lead a massive attack on France. The Allies suffered the most casualties. This was one of the longest battles of World War I lasting over 1 year.
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The Sussex Pledge was a pledge between Germany and the U.S. This pledge stated that Germany would warn non-military ships before they would sink them. Germany did this because they did not the U.S. to join the war.
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The Battle of Somme was one of the bloddiest battles ever. There were over 1 million casualties all together. This was the bloodiest battle of World War I. This battle took place at the river Somme.
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The Zimmerman note was a note that Germany sent to Mexico asking them to attack the U.S. They wanted Mexico to distract the U.S. so they would not join the war.
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During WWI Russia was not happy with their government. So they started a revolution and tried to overthrow their govenment. The U.S. didn't feel so bad about that idea but it failed.
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After many different German action the United States could not take it any longer. On April 2, 1917 the US offically joined the Allies in World War I.
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This was a battle where the French attacked the Germans at Argonne Forest. The French ended up losing the battle. This was close to then end of WWI
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