The correct answer is D) hey opened textile mills that employed many workers.
Samuel Slater and Francis Cabot Lowell changed the early American industry in that they opened textile mills that employed many workers.
In 1813, they founded the Boston Manufacturing Company in Waltham, Massachusetts. They were wealthy businessmen that had the vision to participate in the industrial sector of the United States and opened that company that created many jobs for the American people. The company hired approximately 300 workers to produce textiles and it became one of the larges industrial plants of the country in that time.