Railroads transported many people, and led to the development and transportation of the West. This influenced the idea of "manifest destiny" and spread the word on to others for the expansion of the country. Railways made it accessible and economically affordable for individuals to settle in areas like Montana, Wyoming, Arizona, New Mexico, the Dakotas, Colorado, Oklahoma, etc. Also, as railroad companies grew in power, they gained more and more influence in politics, leading to "robber barons" and their unfair rebates, kickbacks and so forth.