Final answer:
It is true that the Transcontinental Railroad connected the east and west of the United States, providing efficient transportation for people and goods, which significantly influenced the market revolution by transforming the economy and society.
Therefore, this statement is true.
Step-by-step explanation:
The Transcontinental Railroad was indeed a critical factor in connecting the east and west of the United States, making it true that it allowed people and goods to move between these regions much more efficiently. With the completion of the railroad, it became possible to carry vast mineral resources from the western states, which were then in high demand for the expanding industries, such as steel manufacturing, telephone production, and the development of the light bulb after the civil war. The railroad network also enabled a massive wave of immigration, with fourteen million people coming to the U.S. to work in factories, signifying a shift from rural areas to urban centers. This dramatic change was not without its costs, though, as factories were often dangerous places with low wages, which eventually led to the rise of labor unions. The ability to transport goods cheaply and efficiently via the rail network was instrumental in the success of the market revolution, transforming the social and economic landscape of the nation.