In the early 1900s, how did the development of mass transportation systems such as subways and trolleys impact urban areas?
a
b
They contributed to a geographic separation of socioeconomic classes.
They led to a reduction in the need for ethnic neighborhoods in cities.
They created a labor shortage as workers left factories for transportation jobs.
They reduced pollution in cities by ending problems with overcrowding.
С
d

Why did the federal government choose to give each tribal member a 25-year deed to the reservation land? this was the life expectancy of native americans at this time, and the government wished to grant rights for only a single generation. they considered this to be enough time to keep the area calm before they could take the land back again for sale. the united states government believed that the nutrients from the land would be depleted by the end of the deed. the government believed this would be enough time for the tribal members to become self-reliant and adapt to the farming lifestyle.

In the course of illness senerational campaign against stephen douglas in1858 abraham declared that

The united states economy makes up how much of the worlds economy