Which of these was the most important reason for the success of the economy of han china?
a) trading gold with the roman empire.
b) sea voyages of zheng he's navy.
c) mongol control of the silk road.
d) han control of silk road trade.

Mid to high level clouds that look like layered blankets are called

Why did the second indochina war start in 1956

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.