It's A
Irrigation was overused, the soil didn't get any rest (crop rotation is a younger invention), the result was salinization of the soil, which led to decline of Sumer.
During the Holocaust<span>, the creation of </span>ghettos<span> was a key step in the </span>Nazi process of separating, persecuting, and ultimately destroying Europe's Jews..Ghettos were<span> set up to segregate Jews from the rest of the population.</span>.
Isolationist because they had no intentions on joining the war before pearl harbor
Answer:
It was the issuing of the Emancipation Proclamation.
