Question

Which answer best describes the Transcontinental Railroad?

It was built from Illinois to Oregon and was completed when crews joined the tracks in Montana.
It was built from Nebraska to California and was completed when crews joined the tracks in Utah.
It was built from Arkansas to California and was competed when crews joined the tracks in Nevada.
It was built from Kansas to Washington and was completed when crews joined the tracks in Wyoming.

Answer 1

Answer: It was built from Nebraska to California and was completed when crews joined the tracks in Utah.

Explanation: I just took the test :)

Answer 2

It was built from Nebraska to California and was completed when the crews joined in Utah.

Railroad tracks already existed in the Eastern U.S. before the transcontinental railroad, so the tracks only had to run from Nebraska westward.
Two separate building teams worked on the railroad, and met in Utah, completing the railroad.