Which transportation breakthrough had the GREATEST impact on the economic development of the American frontier in the late-
1860s?
A)
the Erie Canal
B)
the automobile
C)
the interstate highway system
D)
the Transcontinental Railroad
Eliminate

During the 1920s, which president atoped a laissez-faire toward business, which bring about great depression

What from the columbian exchange had perhaps the biggest impact on the world?

1. what was the result of growing nationalism and pan-africanism on european-african relations? africans were encouraged to seek independence from europe. european colonialism grew and strengthened in africa. the change of power from european to african rule went smoothly. africans believed they could live peacefully with europeans.