What could have been done by the international community to prevent WW2 and the rise of hitlers regime?

From the beginning it was clear that Hitler's goal was to conquer the world. ... While it might seem that everything has already been said about World War II ... Humanity could have been spared the terrible suffering and trauma of the war ... that the events associated with his rule weren't sporadic or localized.

answer: the ocean

explanation: if you map out 30 n and 40 n latitude, you will get the ocean

a because i tried to vote with just my college id and the answer was no