How was the expansion of trade and exploration in the postclassical era important to china during the song dynasty?

a. the confucian civil service exam was replaced by exams used in west africa.

b. china adopted the systems of feudalism and communism that were used in medieval europe.

c. china was able to expand its markets along the silk road and increase maritime trade.

d. christianity and islam spread to china and replaced daoism and buddhism as official religions.

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection, he becomes nervous and fearful. soon, he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.

Who's idea was it for businessmen to use their wealth for the greater good of society? (gospel of wealth ~ap u. s. history

Which directions did the mongols travel as they swept across asia and europe