Which american industry first used machines to do work previously done by hand?
a. textiles
b. shoemaking
c. guns
d. cotton farming

American industry first used machines to do work previously done by hand is letter D which is cotton farming. Cotton has been in American industry since 1500's documented from sightings by the Coronado expedition 1540-42. White Gold is the appropriate term for cotton, the natural fiber which continues to play an important role in the United States economy.