<span>The Indians tried to negotiate</span>
they were dependent on fertile land.
Explanation:
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The correct answer is:
a. Cotton Mills
During the Reconstruction Era, Cotton became a protagonist in the industrial growth of the Southern States. Southern capitalists sank Money into cotton rather than factories or land. More precisely, they invested in slaves; the average slave owner held almost two-thirds of his wealth in slaves in 1860, much less than he held in land.
The answer is Civil War. It was battled over the subject of national supremacy versus states' rights. It established that the national government was highest or supreme, its sovereignty or dominance derived directly from the people, and therefore the states could not legally separate from the Union.