Final answer:
The market revolution is true to have brought significant social and economic transformations in the 19th century United States, including industrialization and the expansion of the transport network.
Step-by-step explanation:
The statement 'The market revolution brought many social and economic changes to the United States' is true. The market revolution was a series of interconnected developments in agriculture, manufacturing, mining, transportation, and finance that drastically transformed the American economy in the 19th century. This period saw the introduction of factories, the expansion of the railroad network, innovations in transport and communication, such as the telegraph, and the rise of finance capitalism as individuals and companies amassed capital to invest in new technologies.