In general, in the United States, railroad expansion greatly affected the growth of major urban centers since more people were able to travel west to set up new lives in new cities with relative ease, as opposed to having to rely on horses and much slower means of transportation.
Answer: The Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850 that defused a political confrontation between slave and free states on the status of territories acquired in the Mexican–American War.
The answer for this question could be 4 million because people started to go to schools so they could get jobs and earn money to pay for things they needed back then
