United States history

1. a secret plan or agreement to carry out an illegal or harmful act
5. a person who wants to end slavery
6. A purchase made by thomas Jefferson that doubled the size of the united states
7. an area with a high population
9. an area with a low population
12. when a country gives materials to a mother country
13. something that prevents access
16. a proclamation made by Abraham Lincoln that freed slaves
17. the planned murder of an important person
20. the process of an area becoming more urban

2. when the 13 colonist rebelled against Great Britain
3. a waterway made by people
4. when the colonist were left alone by great britan
8. slaves states that bordered the northern free states during the U.S. civil war
10. a large number of military troops divided into smaller companies
11. a war between the union and the confederacy
14. the settlement of a dispute by concessions on both or all sides
15. compulsory recruitment for military service
18. something made to make something else easier
19. the act of a state impeding or attempting to prevent the operation and enforcement within its territory of a law of the U.S