How did the development of public transportation systems such as subways, trolleys, and commuters trains impact major cities during the industrial age?

Plz ? ? 20 points for this question ! hhjc6

What was the first major route to connect europe and asia

The case of brown v. board of education was started when a. oliver brown's daughter had to walk 21 blocks to the nearest school when an all-white school was only 7 blocks away. b. oliver brown's son was caught at a sit-in at the local school district. c. oliver brown's son was unable to participate in the school's all-white football team. d. oliver brown's daughter was unable to attend high school because there were none for her to attend.