Why was Germany so interested and successful in taking land in Eastern Europe?

According to the Nazi government this goal was pursued by Germany to secure a fair rearrangement of territory for the common benefit of a new, economically integrated Europe, which in Nazi terminology meant the continent of Europe with the exclusion of the "Asiatic" Soviet Union.

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

i think the answer is the one about environmental and social health.

hope this