Sampling, mark and recapture, indirect observation, and direct observation
Answer:
April 6 1917
Explanation:
The U.S officially entered conflict
Answer:
They developed the idea of creating trusts.
Answer:
Most were killed by disease which led to their conquering by Europeans
Explanation:
Brainliest PLEASE
I believe the answer is D as B and C are just completely false and while A could be possible its not the answer because granting voting rights to former slaves doesn't really punish the south but it does give former slaves suffrage. So its D
