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Archduke Franz Duke and his wife were assassinated
Him and his wife, Sofie, were assassinated by Serbian nationalist, Gavrilo Princip. -
Austria-Hungary Declares War on Serbia
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Germany declares war on Russia
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Germany declares war on France
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The United Kingdom declares war on Germany
Before the United Kingdom declared war on Germany, Germany invaded Belgium. -
The First Battle of Marne Started
When this battle started trench warfare had just begun and both sides dug in. The battle happened 30 minutes Northeast of Paris in the Marne River Valley of France. -
First Battle of Ypres Began
The first of what would be three battles began to determine if the Allies or German would control the city of Ypres and its advantageous position on the North Coast of Belgium. -
The Dardanelles Campaign begins
The campaign stated that the British would control the strait in a direct line to the Russian navy. The Allies were also competing for the support of the Balkans. -
Second Battle of Ypres began
This battle was fought from April 22, 1915 to May 25, 1915. General Sir Horace Smith-Dorrien, General Hubert Plumer, and General Henri Putz were the Allies's commanders and armies. Albrecht, the Duke of Wurttemberg was the commander of Germany. -
Lusitania is sunk
The boat was being shipped across the Atlantic Ocean between the United States and Great Britain. It was torpedoed by a German U-boat. There was 1,959 people on board and 1,198 people died. -
The Battle of Verdun begins
This was the longest and one of the bloodiest battles in WWI. The battle latest from February 21, 1916 to July 14, 1916. More than 1,200 guns were used around an eight mile perimeter were used to open fire. -
Battle of Somme begins
The war was held near the Somme River in France, and it was the bloodiest battle in military history. On the first day 57,000 British soldiers died. Tanks were also first introduced in this battle. -
Battle of Passchendaele begins
This battle was also known as the Third Battle of Ypres, the Allies' goal was to attack on multiple fronts to overwhelm Central Powers. The Allies did win the battle, but they did not win that much land and there were a lot of casualties. -
Wilson issues Fourteen Points
Woodrow Wilson issued the Fourteen Points speech and he stated that he wanted to end the war peacefully and make sure it never happen again. The 14th point was the most important to Wilson out of all of them. It stated that an international organization would be established to keep peace between the nations. -
The fighting ends
Germany signs an armistice at Compiegne, France. Then fighting ends on the 11th hour on the 11th day of the 11th month. -
Treaty of Versailles
The treaty was signed in Paris between Germany and the Allied Powers to officially end WWI. The Prime Minister from the United Kingdom, France and U.S. President Woodrow Wilson were the most influential participants in the treaty and Germany was not invited.