| A | B |
| natural resources | something found in nature that is useful to people |
| Edward Libby | moved his glass factory to Toledo |
| entrepreneur | a person who takes a risk to start a new business |
| productive resources | natural, labor, and capital resources |
| opportunity cost | the value of what a person must give up in order to get something else |
| Alexander Winton | opened a motor car company in Cleveland in 1897 |
| John D. Rockefeller | founded the Standard Oil Company in Cleveland |
| competition | happens when more than one business tries to sell the same goods or services |
| monopoly | a company that controls an industry |
| labor unions | groups of workers who join together to improve working conditions |
| trade group | a group of people who do the same job |
| Thomas Edison | a famous inventor from Milan, Ohio |
| Charles Brush | an inventor from Cleveland who invented the electric streetlight |
| Charles F. Kettering | invented the automobile self-starter |
| Garrett Morgan | Ohio inventor who invented the automatic traffic signal |
| Sherman Antitrust Act | made monopolies illegal |
| Granville Woods | his railroad telegraph improved the safety of train travel |