Which of the following are true about railroad expansion in thr late 19th century? Choose all that apply
1. Railroad expansion played a crucial role in the economic development and growth of the United States during the late 19th century.
2. The transcontinental railroad was completed in 1869, connecting the East and West coasts of the country.
3. Railroads allowed for the more efficient transportation of goods and people across long distances.
4. The expansion of railroads led to the displacement of many Native American tribes from their traditional lands.
5. Railroad companies received significant government subsidies and land grants to encourage their expansion across the country.