Social Studies

2. to increase in speed
5. group of corporations run by a single board of directors
8. place where people received medical treatment, for free or a small fee
10. someone who sets up new businesses to make a profit
11. started as a poor Scottish immigrant, entered the railroad business, then the steel industry
13. a company that controls most or all businesses in a particular industry
14. unions negotiating with management for workers as a group
15. worked for years to create the first telephone
16. invested in an oil refinery and formed the Standard Oil Trust
17. to give good reason for an action
18. to change; to make different
19. perfected a system to mass produce cars and make them available for cheaper
20. buildings divided into many tiny apartments
22. purify; or make free from impurities
23. to get rid of

1. Center offering help to the urban poor
3. the system in which privately owned businesses compete freely
4. businesses owned by many investors
5. “invention factory” at Menlo Park NJ light bulb and hundreds more inventions
6. the president of the American Federation of Labor
7. testes out airplanes for transportation
9. manufacturing method in which a product is put together as it moves along a belt
12. a document giving someone the sole right to make and sell an invention/product
17. she created settlement houses for the poor
21. rapid growth of city populations