World War I started due to a culmination of several long and short term factors involving aspects of nationalism, imperialism, militarism, alliance systems, and physical conflicts occurring over a forty year period. The industrial revolution brought around a radically different Europe than there had ever been before and it made nations compete and be wary of each other politically, economically, and militarily. This tension among the leadership of the European nations was supported by the …showed first 75 words of 987 total…

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