| Term | Definition |
| Samuel F.B. Morse | painter, scientist, with Leonard Gale, created the telegraph |
| specialization | in farming, the raising of one or two crops for sale rather than a variety of foods for personal use |
| market revolution | the major change in the US economy produced by people's beginning to buy and sell goods rather than make them for themselves |
| capitalism | an economic system in which private individuals and corporations control the means of production and use them to earn profits |
| entrepreneur | a person who organizes, operates and assumes the risk for a business venture |
| telegraph | a device for the electrical transmission of coded messages over wires |
| John Deere | blacksmith, invented the first steel plow |
| Cyrus McCormick | invented the mechanical reaper allowed one person to do the work of five, invention allowed farmers to change from subsistence farming to growing cash crops |