Question

Why did world war 1 start?

Answer 1

The immediate cause of the outbreak of World War I was the murder of the Austrian Crown Prince Franz Ferdinand with his wife by a Serb student, Gavrilu Principev, on 28 June 1914 during their visit to Sarajevo

Answer 2

The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1. After the assassination, Austria-Hungary threatened war on Serbia. ... At this point, Europe was at the brink of going to war.