Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. This model positioned the Sun at the center of the Universe, motionless, with Earth and the other planets orbiting around it in circular paths, modified by epicycles, and at uniform speeds.
The major features of Copernican theory are: Heavenly motions are uniform, eternal, and circular or compounded of several circles (epicycles). The center of the universe is near the Sun. Around the Sun, in order, are Mercury, Venus, the Earth and Moon, Mars, Jupiter, Saturn, and the fixed stars.
Allows calculation of planetary orbital periods around Sun. Allows geometric calculations of planetary distances from Sun. These show nice regularity: more distant planets have longer periods, move slower. Easier to calculate planetary positions than with Ptolemaic model.
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Europeans bought manufactured goods to Africa in return for slaves.This is important because mercantilism is based on the idea that money is wealth.
Answer:
Columbus sighted land in the Western Hemisphere.
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Answer:
False. By 1965 more African Americans did not have professional and managerial jobs than whites.
Explanation:
African Americans were still deemed low. They were a major target just because of the way their skin color was. Having white family background meant that you were born with certain benefits.
African Americans even if given jobs had to work really hard to climb the ladder up for success. They could not afford to pay for colleges or good living standards.
can you ask your teacher for help and if not then try to use quizlet or answers .com but otherwise the American economy dropped because of the depression
