What sins caused the israelites to go into Babylonian captivity?

They had slid down somewhat from the high standard that God set for them. More specifically, the dabbling in idolatry that some had permitted themselves, was the main problem, and especially after the bad example set by Menashe. See 2 Kings ch.17.

See also: Reasons for the Destructions.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.