How did the transcontinental railroad and the other causes interacted and relate with each other to promote industrialization

The 1850s were a time of westward expansion for the United States. The California Gold Rush and Nevada Silver Rush pushed U.S. Americans further and further west with the promise of economic prosperity. In 1862, Congress passed the Pacific Railroad Bill and several grants that allowed financial support for the Central Pacific and Union Pacific railroad companies. These two companies then began constructing what would become the transcontinental railroad.Hope this helps!!