The four M.A.I.N causes of WWI are known to be Militarism, Alliances, Imperialism and Nationalism. Militarism built up the armies in Europe, meaning more weapons to use and more soldiers to use them. Alliances dragged many countries into what would have otherwise been a mini-conflict between Austria and Serbia. Imperialism gave the combatants in Europe colonies all over the world that got involved making it a world war. And nationalism made everyone think their country was the best and made them want to fight. Different people blame different combinations of the four for causing the war.
The Germans were to blame
Yes
germany
John Cena
I don't know... maybe Germany
The Germans were to blame
Germany
Yes
France
President Wilson blamed Germany for World War 1.
Germany
Japan
The war guilt clause forced Germany to take all the blame for World War I.
Treaty of Versailles
germany
John Cena
The Jews