What did the U.S. Government promised to the railroads for laying track all across the country?

The U.S. Government promised railroads significant land grants and financial incentives to encourage the construction of transcontinental railroads. These incentives included large tracts of land adjacent to the tracks, which the railroads could sell or develop to fund the construction. Additionally, the government provided loans and subsidies to support the costs of building the infrastructure. This partnership aimed to enhance national connectivity and promote westward expansion.