Wny were first concentration camps opened?

Explanation:

March 1933

From 1933 to 1945, Nazi Germany operated more than a thousand concentration camps on its own territory and in parts of German-occupied Europe. The first camps were established in March 1933 immediately after Adolf Hitler became Chancellor of Germany.

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

darwinism is survival of the fittest there for social darwinism is the survival of the wealthiest