5 Main Causes of WWI
Imperialism
Britain, France, Germany, and Italy competed for colonies in Africa and Asia. Germany had fewer colonies than Britain and France, and felt it deserved more colonies.
Alliances
Competing alliances bound European nations together. An attack on one nations forced its allies to come to its aid.
Nationalism
Many Europeans embraced nationalism, strong feelings of pride, loyalty, and protectiveness toward their own countries. They wanted to prove their nations were the best.
Militarism
Nations made military power a primary goal. Major powers built up their armies and navies.
Assassination
The assassination of Archduke Franz Ferdinand caused a huge conflict.