Answer:
C. The railroad was remarkably well built, with some sections remaining in use for the next seventy-five years.
Step-by-step explanation:
During the construction of the transcontinental railroad between 1863 and 1869, the following occured;
- Two companies, the Union Pacific and the Central Pacific, won the contracts to build the railroad.
- One company built east from California, one company built west from Nebraska until the railroad met at Promontory, Utah.
- The federal government subsidized the project with generous land grants and millions of dollars in public loans to the railroad companies.