a series of complicated factors caused the war, including a brutal assassination that propelled Europe into the greatest conflict the continent had ever known. The murder of Archduke Franz Ferdinand outraged Austria-Hungary. ... Austria-Hungary was furious and, with Germany's support, declared war on Serbia on July 28.
Answer:
D.resentment among Mexicans at the loss of their land
<span>United Nations was founded in 1945 to replace the League of Nations, in the hope that it would intervene in conflicts between nations and thereby avoid war</span>
The truman doctrine offered aid to any country threatened by communism. SO any government that was liable to turn to communism the truman doctrine aided those countries so that those countries might instead turn to democracy.
