Answer:
As famous as Marco Polo is, he didn't invent anything. However, other inventions such as the compass and the boat influenced Polo. Marco Polo used the compass on all of his travels but especially to reach Asia.
State Representation is based off the population of the state, since slaves weren't technically citizens, they were not counted in deciding how many representatives a state had. Slaves were a large majority of the population in the south. The south thought they were under represented and wanted slaves to be counted so representation was fair in their eyes.
The answer is C. Cities grew rapidly in a period known as Urbanization. People came to cities to look for new jobs and many other reasons.