The answer is B, Thousands of troops and leaders were captured.
In 1887, the government made a new policy under the Dawes Act. It was designed to force assimilation by separating Native Americans from their tribal affiliations. They were then turned into farmers, and American citizens.
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
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Literally everything glad I could inform you (-◼️_◼️)