Explain two ways that the lewis and clark expedition influnced the ecomic growth and the diversity of the united states durning the 1800s USE CER OR RACE IM NOT GOING TO ANY WEDSITES

To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land