B. Slave trading was ended in the District of Columbia
Edge 2020
The Sepoy Mutiny was a rebellion of the Indian population (specifically Indian soldiers: Sepoy means a soldier), and this rebellion was lost by the Indian population and Great Britain suppress it.
In order to prevent new rebellions Great Britain reorganized their rule over India and created the British Raj -direct rule.
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I believe the answer you are looking for is the homestead act of 1862
I would have to say D " A phantom ship , with each mast and spar/ Across the moon like a prison bar,/ And a huge black hulk, that was magnified / By its own reflection in the tide.
It reminds me of her poem of when she came from Africa to America.