Which of these would have had a major impact of the development of the streetcar and the electric trolley in the late 19th century? a. dwindling urban population b. migration to the great plains c. fewer opportunities for farmers d. greater mobility within big cities?

In the late 19th century, cities had a considerable growing population and mass transportation like the streetcar or the electric trolley were used as a solution to improve the mobility within big cities. Thus, the right answer is option D, greater mobility within big cities. Later on, cars became affordable, and they replaced the mass transportation vehicles, but nowadays many cities try to focus on electric mass transportation because it pollutes less than cars.

b. martin luther king jr. wrote and spoke "i have a dream"

explanation:

i know this 100 percent is correct   b. is the best one. < 3

this is a good question! i'll do some research and come back when i have the answer!