 It recruited Cantonese laborers in China, who did prodigious work building the line over and through the Sierra Nevada mountains and then across Nevada to their meeting in northern Utah.George J. Gould attempted to assemble a truly transcontinental system in the 1900s.The line from San Francisco, California, to Toledo, Ohio, was completed in 1909, consisting of the Western Pacific Railway, Denver and Rio Grande Railroad, Missouri Pacific Railroad, and Wabash Railroad.