How did Minnesota benefit from slavery

Slavery has been forbidden in the state of Minnesota since that state's admission to the Union in 1858. ... There shall be neither slavery nor involuntary servitude in the State otherwise there is the punishment of crime whereof the party shall have been duly convicted.Slavery continued at Fort Snelling, ending just before Minnesota statehood in 1858, with only a brief hiatus from 1845 to 1850. The practice of slavery spread to newly constructed Fort Ridgely in 1854. From 1855 to 1857, no fewer than nine people were enslaved at Fort Snelling, the highest number since the 1830s.

Explanation:

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a.) d-day invasion of normandy.

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