Answer:
Slaves provided agricultural and industrial labor, constructed fortifications, repaired railroads, and freed up white men to serve as soldiers. Tens of thousands of slaves were used to build and repair fortifications and railroads, as haulers, teamsters, ditch diggers, and assisting medical workers.
Explanation:
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Stop communism hope that helps
I believe it's B because They were always claimed as Mexican territory
I think that the federal courts rule over state disputes because there needs to be an unbiased third party making unbiased decisions, unbiased rulings. An example would be if California and Colorado disputed over rights of water to the Colorado River, the federal court would intervene.
