How did the building of the transcontinental railroad support manifest destiny
a. the railroad made the assimilation of the native american tribes in indian territory easier.
b. the railroad brought more people to the west, which pushed the government to citizens settle more land.
c. the railroad move goods from the west to markets in the east, fueling the nation’s economy.
d. the railroad provided employment to many early settlers, enabling them to improve their standard of living.