Answer: D.
Explanation: The Cherokees were forced to give up their land and nation to move to Oklahoma.
It utterly exhausted Germany's eastern army and saw to a huge fall in German military moral due to the resounding defeat they suffered. It also weakend the western german army because Hitler pulled men and resources from them to try to win the East from the USSR.
Copernicus said that it was the Sun that was the center of the Solar System, not Earth
The ideas from the worker/strikers.<span />
