One reason people moved to the cities was that new industries, particularly the __ [ Select ] __ industry needed people to work in __ [ Select ] __, where giant machines created cloth and clothing as well as other products. Although the people working in these places were unskilled, they found work on the __ [ Select ] __ which required little skill and demanded repetition of small tasks over and over again. Another major invention __ [ Select ] __ moved people and products across the country, particularly natural resources like __ [ Select ] __, people from the farms to the cities, as well as finished products like clothes. Another form of transportation developed as __ [ Select ] __ appeared across the country connecting the interior to the seas for international trade.