Answer:
The Mormons greatly benefited from this as they were find a place where they were free of religious persecution, Utah. In addition, larger slave owners' political power increased, newer landowners and homesteaders, hunters, trappers, and other people whose profession depended upon the land, and writers who had a whole new genre to draw from all benefited.
Explanation:
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To keep either house of Congress from becoming too powerful. (Gradpoint)
The Spanish were in search of gold and other riches.