chap 18 sec crossword puzzle

3. to get rid of
6. buildings divided into many tiny apartments
7. the exclusive possession or control of the supply of or trade in a commodity or service.
10. is a manufacturing method in which a product is put together as it moves along a belt
11. invented the telephone
13. a poor Scottish immigrant, he worked his way up in the railroad business
17. he invested in an oil refinery. He used the profits to buy other oil companies
19. is someone who sets up new businesses to make a profit
20. tested a gas-powered airplane at kitty Hawk, North Carolina
21. to give good reason for an action
23. invention factory at Menlo Park NJ light bulb and hundreds more inventions
24. unions negotiate with management for workers as a group

1. businesses owned by many inventors
2. formed a new union it was called the American Federation of Labor
4. made the automobile available to millions of people
5. a document giving someone the sole right to make and sell an invention/product
8. came from a well-to-do family but she felt strong sympathy for the poor
9. make free from impurities
11. to change; to make different
12. the system in which privately owned businesses compete freely
14. is the rapid growth of city populations
15. to increase in speed
16. is a center offering help to the urban poor
18. place where people receive medical treatment often for free or for small fee
22. is a group of corporations run by a single board of directors