the first one and second one should be the answers
The heliocentric theory is the theory that everything in the solar system revolves around the sun, in contrary to the geocentric theory, where they believed that everything revolved around the Earth. The heliocentric theory changed our viewpoints on the universe, and space and science. This theory was made by Nicolaus Copernicus, and backed up by Galileo Galilei.
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the problem was a large number of Black veterans were discharged dishonorably than their white counterparts.
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