Did Samuel slater build the first US factory?

Well, honey, Samuel Slater may have been known as the "Father of the American Industrial Revolution," but he didn't exactly build the first US factory. That title goes to Francis Cabot Lowell and his partners, who opened the first integrated cotton spinning and weaving factory in Waltham, Massachusetts in 1814. So, close but no cigar for Mr. Slater on that one.