1). What was one challenge workers faced while building the railroad? (A). There were too many people who wanted to work
(B). They had to blast tunnels through the mountains
(C). Native Americans villages were in the way
(D). The buffalo refused to move.

2). how did the transcontinental railroad change life in the United states?
(A). People stopped moving to new land.
(B). People stopped using Pony Express
(C). People no longer traveled by stagecoach
(D). People could travel great distances quickly