Question is a double negative.
So WW2 cost the world:
Several million dead People
Millions and Millions of people worked on both sides to win this war and did not "produce" any thing for the economy
And finally every gun, bullet plane and so on cost real money taken from the economy
nothing except to feed
it didnt
It didnt
They didnt want to start a war
they didnt win...
most didnt
it didnt
they didnt have none
They didnt
He didnt Hitler did
The US didnt want war
French didnt win the world war 1 because england won it