Where were earliest factories built in US?

The earliest factories in the United States were built in the northeastern region, particularly in New England. The first significant factory, often credited to Samuel Slater, was established in Pawtucket, Rhode Island, in 1793, focusing on textile manufacturing. This area became a hub for the Industrial Revolution in America, leveraging water power from rivers to drive machinery. Other states like Massachusetts and Connecticut also saw the rise of early factories during this period.