How did American western expansion further fuel racism and cultural collision?

This expansion led to debates about the fate of slavery in the West, increasing tensions between the North and South that ultimately led to the collapse of American democracy and a brutal civil war. This revolutionized America's economy. This idea that it was their destiny to expand caused Americans to disregard the territorial rights of Native Americans, wiping out many tribes and causing a cultural divide, tension and wars. The negative effect that this had on Native Americans were lasting effects.

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your answer is d

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boundary is what it refers to hope this

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