1. World War I
The War to End All Wars

2. Causes of WWI
Germany and Austria-Hungary wanted to increase the size of their empires
Each country was building up its supply of weapons
Countries began to form alliances
France, Russia and Great Britain formed the Triple Entente
Germany, Italy and Austria-Hungary formed the Triple Alliance

3. Causes
In 1914 Archduke Franz Ferdinand was assassinated in Sarajevo, Bosnia by Serbians.
Because of this Austria-Hungary invades Serbia

4. Causes Russia aids Serbia, so Germany declares war on Russia.
France declares war on Germany
Germany attacks Belgium
Great Britain enters the war to help France and Belgium

5. Causes
The United States joins the war against Germany in 1917 which gives the Allied powers fresh troops and weapons
World War ends in 1918, Allied Powers Win

6. Allied Powers Great Britain France Russia United States 1917
Italy 1915

7. Central Powers
Germany
Austria-Hungary
Ottoman Empire
Bulgaria

8. Results of World War I
Treaty of Versailles – written by the Allied Powers
Germany had to give up a territory to France, Great Britain, Belgium, Denmark and Poland

9. Results
To prevent Germany from starting another war, the size of it’s army was reduced
They were forbidden to have submarines and airplanes

10. Results Germany had to accept responsibility for starting the war
They had to pay 33 million dollars in damage to the other nations
Formation of the League of Nations

11. League of Nations
It did not include every nation, the U.S. did not join
Decisions required all nations to agree
It could not form an army to enforce decisions

12. World Leaders in WWI Georges Clemenceau – France
David Lloyd George – Great Britain
Czar Nicholas II – Germany
Woodrow Wilson – United States