Question

When world war was heppen ​

Answer 1

Answer:

28 July 1914 – 11 November 1918

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Answer 2

The immediate cause for World War 1 was the assassination of the Archduke Franz Ferdinand of Austria and his pregnant wife Sophie. ... The assassination was planned by a Serbian terrorist group, called The Black Hand and the man who shot Franz Ferdinand and his wife was a Bosnian revolutionary named Gavrilo Princip.