What natural features may have limited the expansion of the civilizations in Mesopotamia

newton is important because he contributed more to the development of science than any other person in history. isaac newton is remembered as the greatest scientific genius who ever lived. his discoveries about physics, light, and mathematics changed the world.

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.

answer; i believe the two groups were irish immigrants and chinese immigrants;