Why did the usa have a prejudice against new immigrants?

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.

The first settlement created by the pilgrims in 1620, came for religious freedom. i'm failing history

Why did louis xvi call a meeting of the estates-general in 1789? how long had it been since such a meeting had been called?