What term refers to the fact that the US is becoming increasingly interconnected economically in the early 1800s?

The term that refers to the increasing economic interconnectedness in the United States during the early 1800s is "market revolution." This period was characterized by significant changes in transportation, communication, and production, which facilitated trade and the exchange of goods across regions. Innovations such as the steam engine, canals, and railroads played a crucial role in transforming the economy and promoting regional specialization.