| A | B |
|---|
| inventions | discovery or finding |
| transportation | travel from one place to another |
| illegal | not authorized by law |
| American culture | the culture of america |
| skyscraper | a very tall building |
| reform | change into improved form |
| communication | information exchanged |
| boom | increase in importance |
| inspection | to look at something closely |
| newcomers | someone who just arrived |
| monopoly | control over a whole supply |
| homeland | native land |
| industry | a business that provides a product or service |
| neighborhood | people living near one another |
| competition | a contest between people |
| slums | crowded, dirty, run-down living conditions |
| union | something formed by combining people |
| strike | to stop work until employers listen |
| prejudice | dislike based on race or sex |
| horrified | strong fear |
| policy | a document that contains an agreement |
| regulate | to bring order to |
| electricity | a form of energy |
