Question

why first world war begin

Answer 1

Answer:

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

Answer 2

Answer:

World War I, also known as the Great War, began in 1914 after the assassination of Archduke Franz Ferdinand of Austria. By the time the war was over and the Allied Powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.