

The incident led Austria-Hungary to declare war against Serbia, which was supported by Russia.

The war began with the assassination of Austro-Hungarian Archduke Franz Ferdinand by a Serbian nationalist in Sarajevo.

Allies and colonies in other parts of the world ensured that Africa, Asia and South America also became theaters of war. The Great War was a war fought among the major powers of Europe and North America from 1914 to 1917.
