"“when peoples were conquered, incorporated into provinces, and, in the due course of time, became part of an integrated empire, this entailed a process of ethnic disintegration and decomposition"

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copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.