The main causes of the first world war were:
<h3>Militarism</h3>
There was a growth of millenarianism in nations. many nations had sophisticate weapons and well trained military.
<h3>Alliances</h3>
The alliances that were formed between nations was part of the war. There were the axis and the allied powers.
<h3>Nationalism</h3>
The increase in nationalism and the need to protect country and property was a part of the war.
<h3>Imperialism</h3>
Some nations has powers over other countries. They controlled the affairs and the resources in these areas.
<h3>Death </h3>
The killing of Franz Ferdinand was partly the reason why the war started.
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