Which two immigrant groups are specifically mentioned as providing a significant workforce for building the railroads?

Mexican and Canadian immigrants

Which of the following best describes the working conditions for the laborers who built the railroad?

Simple and requiring little effort

People who came from other countries to live and work

Engineers who were hired to design the railroad tracks

Local residents who were temporarily hired for small jobs

Government officials who were sent to supervise the project

The railroad companies offered free housing to anyone who promised to live near the tracks.

Workers established settlements that grew into towns.

The government paid people large sums of money to move to the new areas along the railroad.

Each worker was given a large plot of land as payment for their labor.