| A | B |
| slum | poor crowded section of city with rundown and unsafe housing |
| strike | period when workers refuse to work until demands are met |
| reform | changes designed to make things better |
| monopoly | a company that controls an entire industry |
| tenement | a building carved up into small apartments |
| Model T | Henry Ford's most popular car; affordable because it was built on an assembly line |
| corporation | a large business that is owned by shareholders |
| sweatshop | a small factory often with unhealthy working conditions |
| shareholder | a person who invests money in a corporation |
| labor union | an organization formed by workers to strive for better wages and working conditions |
| national park | an area set aside for its natural beauty, where no one is allowed to settle or farm the land |
| assembly line | a way to manufacture a product quickly and cheaply by moving partially built products from one work area to another on a moving belt |
| Spanish American War | a war fought in 1898 between the United States and Spain |
| Great Chicago Fire | a fire in 1871 that killed hundreds of people, left thousands homeless and destroyed a third of Chicago |
| settlement houses | a community center that provides child care, education, and other services to the poor |