When did the the First World War break out?

On July 28, 1914 Austria-Hungary declared war on Serbia with German support. Many declarations of war followed in the next few days.

1 Answer
Jul 27, 2016

On July 28, 1914 Austria-Hungary declared war on Serbia with German support. Many declarations of war followed in the next few days.

Explanation:

The lead up to the first World War (starting with the June 28 assassination of Franz Ferdinand) had many times when the chain of events could have been stopped. The Austria-Hungarian declaration of war on Serbia was a tipping point beyond which there was no recovery.