Best invention for mankind from WW2?

[Walker Rich]

I think that the Nordic Bombsight helped a lot.
It was helped accurate bombing happen.

 

[Bert Blitzkrieg]

All the good ones are named already . Not an invention but the idea of nations coexisting in a global community happened in part because of WW2. It became obvious that nations should support each other, hence NATO.

Aren't you forgetting Woodrow Wilson's brainchild: League of Nations. Founded in 1919

 

[Walker Rich]

sorry for the typo, i forgot to delete was

 

[Big Joe]

Tabasco sauce!