[["The first world war started on 28th July, 1914 and ended 11th November, 1918 ", 21.0], ["While there had been rising tension and small conflicts in Europe for a number of years prior, the assassination of Archduke Franz Ferdinand, of the Austro-Hungarian Empire, and his wife Sophie, by a Serbian nationalist on June 28, 1914, is considered the beginning date for World War One.", 14.0], ["The First World War started in 1914", 4.0]]
when did the first world war breakout
history