| Term | Definition |
| tenement | poorly built, overcrowded housing where many immigrants lived |
| labor union | a group of workers that organize to have better working conditions |
| transcontinental railroad | Railway that stretched from the Atlantic to Pacific coasts |
| collective bargaining | when employers and workers discuss and agree on working conditions |
| entreprenuer | a person who sets up and runs a business |
| regulation | a law, rule or order |
| settlement house | A community center for people in cities, that provide help finding jobs, learning English and getting medical care and food |
| petroleum | oil |
| skyscraper | a very tall steel framed building |
| free enterprise | an economic system in which individuals can start and run their own businesses. |
| strike | all workers in a business refuse to work until the owners meet their demands |
| advertisement | public notice or annoucement |