| A | B |
| Eli Whitney | invented cotton gin (removed cotton seeds) and interchangeable parts |
| Robert Fulton | invented powerful steamboat, Clermont, capable of sailing upstream |
| John Deere | invented steel plow, especially effective on hard prairie soil |
| Cyrus McCormick | invented mechanical reaper for harvesting grain |
| Francis Cabot Lowell | developed factory system so all production steps were in one place |
| DeWitt Clinton | developed Erie Canal, linking NYC to Lake Erie |
| Samuel Morse | invented telegraph system and dot-dash communication code |
| Samuel Slater | industrial spy who brought British textile machine design to US |