Multiple things Sparked WW1 like tension rose between Austria Hungary and Siberia
NO we get the territory of Bosnia and Herzegovina
We declare war!
Austria-Hungary declared war on Serbia
German U-boats attacked American ships. The United States warned them and told them to stop but they ignored their warnings
We will join you!
The United States joined the allied forces and in 1918 the central powers surrendered
Leaders of the allied countries met at verailles. They descuss terms and their decisions were recorded in th Treaty of Versailles
The German Empire was replaced by a fragile republic. Austria and Hungary became separate countries. Poland and Czechoslovakia gained independence. Finland, Estonia, Latvia, and Lithuania became independent.