Militarism - Militarism was a cause that led to WWI because many countries were frightened of other nations building up their army. This caused the other realms to believe someone was going to attack and dominate their territories. In response, countries built their military to defend themselves against any given attack. Alliances - Alliances were a leading cause of WWI because Wilhelm II dropped his alliance with Russia, causing them to be frightened of any strike towards them. Russia then partners with France and Britain which led to the Triple Entente. This caused Germany to surround themselves with their enemies who were once known as their partners. Imperialism - Imperialism led to WWI because Germany wanted to control and exploit the