Which drew the horizontal line of slavery across the west along the 36 30’ parallel, the Kansas Nebraska act

About how many european immigrants were processed at the facilities on ellis island

After the congress of vienna europe

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.