Original sentence: Since 1793, when Samuel Slater established the first successful textile "spinning" mill in America at Pawtucket, Rhode Island, harnessed water power had been operating machinery to process cotton fiber into yarn, which would then be outsourced to small weaving shops and private homes where it would be woven into cloth on hand-operated looms
Edited sentence: Since 1787 when Samuel Slater and Moses Brown invented the first horse-drawn cotton mill in Beverly, Massachusetts to 1793, when Samuel Slater established the first water-powered successful textile "spinning" mill in America at Pawtucket, Rhode Island, harnessed water power had been operating machinery to process cotton fiber into yarn, which would then be outsourced to small weaving shops and private homes where it would be woven into cloth on hand-operated looms