Question

which incident marked the beginning of the first world war​

Answer 1

Answer:

The simplest answer is that the immediate cause was the assassination of Franz Ferdinand, the archduke of Austria-Hungary. His death at the hands of Gavrilo Princip – a Serbian nationalist with ties to the secretive military group known as the Black Hand – propelled the major European

Answer 2

Answer:

On September 1,1939,just before Adolf Hitler's invasion of Poland that marked the beginning of world war 2,Zygmunt Klukowski, a young Polish doctor confided in his diary that everyone was talking about war.This incident marked the beginning of World War.