| A | B |
|---|
| supply | how much of a product is available |
| demand | number of people who want a product |
| cotton gin | a machine that removes seeds from cotton |
| profits | the money left after paying expenses |
| price | the amount people will pay for a product |
| growing season | the average length of time between the last frost in the spring and the first frost in the fall |
| ferry | a flat boat large enough for people and their vehicles to get aboard |
| telegraph | electric signals sent over a wire as a form of communication |
