Germany's forces were turned back for the first time in world war ii at:
a. warsaw
b. stalingrad.
c. paris.
d. moscow.

B - Stalingrad

Explanation:

Battle of Stalingrad (1942) –Germany invaded the Soviet Union. The Soviet Union defeated Germany at Stalingrad marking the turning point of the war in Eastern Europe.

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.