Question

what was the sudden event caused for first world war? how war started following this event?​

Answer 1

Answer:

The event that sparked the conflagration was the assassination of the heir to the Austro-Hungarian Empire, Archduke Franz Ferdinand, in 1914. But historians say that World War I actually was the culmination of a long series of events, stretching back to the late 1800s

Answer 2

Answer:

The event that sparked the conflagration was the assassination of the heir to the Austro-Hungarian Empire, Archduke Franz Ferdinand, in 1914. But historians say that World War I actually was the culmination of a long series of events, stretching back to the late 1800s. The path to war included plenty of miscalculations and actions that turned out to have unforeseen consequences.

Explanation:

The first world war was a direct result of these four main causes, but it was triggered by the assassination of the Austrian archduke Franz Ferdinand and his wife. The four main causes of World War 1 are nationalism, imperialism, militarism, and alliances.