The primary reason the bantu-speaking people of west africa migrated southward and eastward between 500bce and 1500ce was to

a. flee warfare.

b. seek religious freedom.

c. establish a colonial empire.

d. find land for farming and grazing. eliminate

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.