Why did the 1st World war happen?

When and in which countries did the first world war take place?

1,132 Hits Veer Aug 8, 2021, 5:43 PM

World War I (abbreviated as WWI or WW1) was a global war in Europe that lasted from 28 July 1914 to 11 November 1918. It was known as the Great War or "the war to end all wars." [....]