The answer to that question is easily C.
Marco Polo traveled during the middle ages (AP period 3), for this the communication technology was not very advanced and Western Europe didn't really know the situation of East Asia and vice versa. When Marco Polo explained his travels to the Europeans of the greatness of China many Europeans decided to go and see for themselves if this greatness was indeed true. When the Europeans arrived in China they were very impressed and a new promotion of travel to China emerged, INCREASING China's economy.
Explanation:
He was a famous orator. In the hot-tempered times before the Civil War, he wanted to preserve the Union—even if that meant compromise. He thundered, "Slavery is wrong!" but to keep the southern states from seceding, he supported the Compromise of 1850 allowing slavery in new territories.
The "e<span>lastic clause."</span>
