Answer:
geocentric system
The Ptolemaic system also called the geocentric system or geocentric model, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses. Ptolemy made contributions to astronomy, mathematics, geography, musical theory, and optics. He compiled a star catalog and the earliest surviving table of a trigonometric function and established mathematically that an object and its mirror image must make equal angles to a mirror.
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White Southerners wanted the land, so the U.S. government granted it to them.
There are all kinds of stories of hostilities between early American colonists and the Native people who were already there. However, these hostilities did not occur with every European group who came. The French are a notable exception to this, and in fact, enjoyed excellent relations with the Natives almost from the very beginning.
Why were the French different? The main reason is that they did not try to change the Natives. They also did not compete with the Natives for land. When the French first came to the Americas in the 1530s and 1540s to engage in seasonal fur trading, they immediately established strong trading ties with the local Natives they found there. The Natives already dealt extensively in furs.
