the murder of archduke franz fernidad on 28 june, 1914 of austria by a serbian fanatic. austria declared war on serbia which leads to world war 1. the other main causes for world wars are aggressive nationalism, imperialism, secret alliances, militarism
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World war 1 was also known as first world war or the great war centered in europe that began on 28th july1914 and lasted until 11 november 1918 .more than 9million combatantsand 7 million civilian died as a result of the war ,a casualty rate exacerbated bh the and industrial sophhistication and tactial was one of the deadlist conflicts in history. paving the way for major political changes,includingrevolutions in many of the nations involved.