Question

Which incident mark the begin and end of the second world war

Answer 1

second world started because of Adolf Hitler.
he wanted to take revenge from allied party ..and of the insult of Germany in the treaty of Versailles....
war ended by the death of Adolf hitler .... after his death Germany surendered ....and after atomic explosions on hiroshima. and Nagasaki ...japan surrendered....

Answer 2

Explanation:

$\huge\mathfrak\red{ANSWER}$

The war ended in May 1945 with Hitler's defeat and US dropping of the atom bomb on Hiroshima in Japan.