Answer:
He insisted that the sun was at the center of the universe.
Explanation:
Nicolaus Copernicus who was initially a church administrator was later known for his astronomical studies. Contrary to ancient philosophers and early European scientists that planet Earth is at the center of the universe. Copernicus, in 1543 concluded that Sun is at the center of the Universe, whereby the Earth rotates around the Sun, instead of the Sun rotating around the Earth.
He also concluded that Earth moves about every day on its axis and this leads to changing seasons.
D. This is just more words because I need at least 20 characters.
Answer: Each city-state was organized with an urban center and the surrounding countryside. Characteristics of the city in a polis were outer walls for protection, as well as a public space that included temples and government buildings. The temples and government buildings were often built on the top of a hill, or acropolis.
Explanation:
