World war 2 how were children in europe affected

Something along the lines of:  Many of there parents died fighting in the war.  

Cities were bombed so children were either killed or orphans during some time they even fought in the war.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.

Ithink the answer is a :