Factors Leading to World War I:
Remember M.A.I.N.
Militarism - the belief or desire of a government or people that a country should maintain a strong military capability and be prepared to use it aggressively to defend or promote national interests.
Alliances - both the Allied and the Central Powers were very concerned by the perceived threat by the other side.
^Allied Powers - France, United Kingdom, Russia, United States, Italy, and Japan
^Central Powers - Germany, Austria-Hungary, Bulgaria, Ottoman Empire
Imperialism - the expansion of European nations as empires (also known as imperialism) can be seen as a key cause of World War I, because as countries like Britain and France expanded their empires, it resulted in increased tensions among European countries
Nationalism - nationalism was a factor in the outbreak of World War I as many nations, particularly the Great powers of - Britain, France and Germany, of the time had convinced themselves of the cultural, economic and military supremacy of their nation.