Whitney's invention pushed forward the agriculture in the United States, but at the same time slowed down the abolition of slavery. Cotton has become a profitable crop, and it took a lot of working hands to process it. It took the US a president with strong political will and a civil war to abolish slavery.
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What saints did the conquistadors pray to and why did they decide to conquer Mexico? What was the ethnic, regional, and age composition of the Conquista?