How did marco polo influence christopher columbus?

How did the union blockade of the southern coast affect the confederacy? it forced the confederacy to build new railroads. it contributed to shortages of weapons and food. it encouraged europe to trade with the south. it halted all trade, leaving the south without supplies.

In an economic downturn, what can happen in countries that depend on high taxes to fund social programs?

List of social classes of the shang dynasty in order ?