"War broke out among American <span>Indian groups when warring chiefs signed new treaties with the government" is correct, although there were also fights between whites and American Indians. </span>
It caused more jobs to open up
<span> America was primarily seen differently by people in the south and in the north in the 1850s. Most southerners did not give much thought to slavery and accepted it as a way of life. In the north, movements were in place that opposed the extension of slavery.
I hope this helps
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