Causes of WWI

World War I was a war that was started by an assassination of a prince. A serbian person came and killing prince ferdinand. The war started because there was alot of tension between the countries in eastern europe. The countries consists of the germans, russia, serbia. Another factor that started the war is imperialism. This war was only between two countrys. But since some countries were friends of other countries, they joined the fight and then it was a war between most of the continent