Boone is most famous for his exploration and settlement of what is now Kentucky, which was then part of Virginia but on the other side of the mountains from the settled areas.
I believe the answer is Religion
From my previously gained knowledge from my Japanese classes, the answer would be D. Because Japan didn't really that much of a population boom until the 20th century because they whole island was not yet inhabited. They didn't really feel like spreading Buddhism because it didn't become a popular religion until the 20th century, and the US had nothing to do with Japans wanting of more land. They gained land mainly from China, so the long-standing rivalry between China and Japan would be the best answer.
<span>Floods provided water for crops.
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The Answer is D.Great Britain tax's and trade laws hurt the colonial economy