Leading up to WW2
Africa and Asia were points of contention against the European countries.because of the materials these areas had . The increasing competition and the more power for greater empires led to an increase in confrontation that made the world into World War I.
Nationalism was major in the beginning and during the war and it made country's mad.the war was based on the desire of the Slavic peoples in Bosnia.it contributed to the people in hungry and all the other country's involvedinvolved
Germany had the greatest increase in the military and made it more in the political role and there was a greater deal of arms as the 20th century came around. So Germany had the army but Russia had the brains and weapons