Compare Tang and Song era China to the cultural achievements of Western Europe during this period. What were the economic and cultural factors that made these societies so different? Think about the situation of Europe after the fall of Rome.

d. migration of french settlers into english colonies

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b