The Five Big Causes Of World War I

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What Trigger World War I? The start of the War had five big causes that leaded to one event that would change everything. The events that happened occurred around the year 1914. The big reason for the start of WWI was that when the a secret service called the black hand. Assassinated the Archduke Franz Franz Ferdinand. The first leading cause was Nationalism. Nationalism means having pride towards your country. It help because some countries wanted other to recognize their country power could take over other nations instead of wanting peace. I think Nationalism had a big impact because it made it look like European war could be won. What I think about Nationalism is that, there was a lot of tension between other countries. The second