Please help Which religions stayed in the same regions? What do you think caused these religions to stay in the same region?
Christianity, Judaism and Islam Hinduism and Buddhism

Science made little real progress in europe in the middle ages because most scholars thought that all knowledge must fit with church teachings. science was considered to be related to magic and witchcraft. the study of science was banned from medieval universities. translations of greek science texts still had not reached medieval europe.

What are new social classes emerged due to advancement in agriculture ?

In the united states, the government creates laws and regulations that business activities to prevent wrongdoing.