Which did not cause the dust bowl of the 1930s?
a. high winds
b. light soil
c. too much plowing of grasslands
d. too much rain year after year

Which was the cause of the rise of the persian empire?

Characteristics of what type of economic system are being described below? 1.economy in which some/all of the basic economic questions answered by central authority 2.trade generally limited to what is produced through the influence of the government a. command economies. b. market economies. c. traditional economies.

Iron making developed in china almost a thousand years later than in the middle east. true false