How the invention of railroads in the united states impacted the economy

How the invention of railroads in the united states impacted the economy and had a significant impact on other industries please include how the invention of the railroads brought changes the American lives, positively impacted the economy, and positively influenced other industries such as steel etc. MUST: Include ten or more sources and have citations in the appropriate places and be written in Chicago format. This paper is 6 pages long. ***THIS PAPER MUST BE WRITTEN PLAGIARISM FREE IM REQUIRING A TURNIT REPORT AS WELL****