What were three reasons people advocated for a transcontinental railroad?

Answer 1

Advocates for a transcontinental railroad argued that it would enhance national unity by connecting the East and West coasts, facilitating the movement of people and goods. It would also promote economic growth by opening new markets and resources in the West, boosting industries like mining and agriculture. Additionally, supporters believed that the railroad would strengthen U.S. territorial claims and promote settlement in the western territories.