The Great Depression began in A. The early 1940’s
B. The early 1920’s
C. The late 1930s
D. The early 1930s

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.