Answer: The 'Four Class System' was a legal caste system in the Yuan Dynasty. After the founding of the Yuan regime, Kublai Khan, the first emperor in the Yuan Dynasty, set up this system to consolidate the ruling status of the Mongolian Ethnic Minority, which had a small number with great disparity to the majority Han people.
Explanation: Brainlest would be appreciated.
They were primary gatherers of wild plant foods
The Church taught that the Earth was the center of the universe and that the Sun revolved around it. By arguing for a heliocentric (Sun-centered) solar system, Galileo was arguing that the Church was wrong. ... In an attempt to prevent its authority from being eroded, the Church objected strongly to Galileo's theories.