| A | B |
| gilded | covered thinly with gold leaf or gold paint. |
| immigrant | a person who comes to live permanently in a foreign country. |
| robber baron | a person who has become rich through ruthless and unscrupulous business practices |
| factory | a building or group of buildings where goods are manufactured or assembled chiefly by machine. |
| working conditions | working environment, nature of work, schedules of work and rest periods, and other circumstances, which have direct impact on the worker's condition, functional capacity, health and health. |
| employers | a person, company, or organization that pays people to work for them. |
| progressive | a person advocating or implementing social reform or new, liberal ideas. |
| labor unions | an organized association of workers, often in a trade or profession, formed to protect and further their rights and interests. |
| labor strike | an organized and intentional stoppage or slowdown of work by employees, intending to make the employer comply with the demands of the employees |
| muckrakers | journalists and novelists of the Progressive Era who sought to expose corruption in big business and government. |
| Pure Food and Drug Act | prohibited the sale of misbranded or adulterated food and drugs in interstate commerce and laid a foundation for the nation's first consumer protection agency, the Food and Drug Administration (FDA) |
| land conservation | structured and planned treatment of a geographic area to preserve its natural environmental characteristics |
| natural resources | materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain. |
| discrimination | the unjust or prejudicial treatment of different categories of people, especially on the grounds of ethnicity, age, sex, or disability. |
| women’s suffrage | the right of women by law to vote in national or local elections. |
| settlement house | an institution in an inner-city area providing educational, recreational, and other social services to the community. |