Simple answer irrigation system.
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https://en.m.wikipedia.org/wiki/Neolithic_Revolution
No, he thought he did. He actually landed in the carribbean.
His writings influenced Voltaire and Rousseau, but most importantly, the American revolutionaries. Thomas Jefferson used the thoughts first penned by John Locke while writing the Declaration of Independence.
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The Aryan migration began its spread into India through the Indus River Valley mainly because that area because d. <span> was closest to the rest of Asia. The theory was there was a catastrophic event that happened to the civilization near the Indus River which caused floods and destruction of fields and houses, Hence they entered India as a nearby region. </span>
C. They left right after Lincoln was elected bc of his anti slavery platform