<span>Copernicus posited a heliocentric or sun-centered conception of the universe; Kepler contributed the three laws of planetary motion; and Galileo's telescope led to observations of earth like planets rather than ethereal planets.</span>
During the World War II, many Americans helped in the productions of arms. Many women during this time were empowered to work in factories. The government had encouraged its citizens to save and recycle their scraps metals for arms production.
Answer:
Athens developed a system that valued philosophy and active political involvement by its citizens in the early form of democracy and Sparta developed a militaristic system that valued physical training, military service, and they were a strict loyalty to the state.
