Sir Isaac Newton's legendary work is mathematical principles of natural philosophies which was first published in 1687. This book had brought a significant change to the modern science. In this book he described the law of motion,foundation of classical mechanics, Newton's law of gravitation and a derivation of Kepler's laws of planetary motion (which Kepler first obtained empirically).All this theories had set a revolution in scientific history.
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Many whites were mad because they wanted to keep their slaves and now they had to let them go and many white poor farmers and labors had to work on farms as share croppors. This also made the wealthy whites lose a lot of their money.
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In June 1950 communist North Korea invaded South Korea. The United States came to the aid of South Korea at the head of a United Nations force composed of more than a dozen countries. Communist China joined North Korea in the war in November 1950, unleashing a massive Chinese ground attack against American forces.
They believed that the Earth was flat so they tried to figure out the circumference so they wouldn't "fall off of the edge" or how big the Earth really was.