United States- Physical and Human Geography.

2. these are highways in rural and urban areas which provide access between an arterial and a major port, airport, public transportation facility.
7. ecosystem with large, flat areas of grasses.
10. a journey or voyage undertaken by a group of people with a particular purpose, especially that of exploration, scientific research, or war.
11. a long journey involving travel by sea or in space.
12. economy is a system that combines characteristics of market, command and traditional economies.
13. the belief in and worship of a superhuman controlling power, especially a personal God or gods.
14. a settler in or inhabitant of a colony.
18. Connectors these highways provide access between major intermodal facilities and the other four subsystems making up the National Highway System.
19. the legally or formally recognized union of two people as partners in a personal relationship.

1. a large island in E Canada.
3. The Eisenhower interstate System of highways retains its separate identity within the NHS.
4. Highway Network this is a network of highways which are important to the United States’ strategic defense policy and which provide defense access, continuity and emergency capabilities for defense purposes.
5. area of land that receives no more than 25 centimeters of precipitation a year.
6. area of the planet which can be classified according to the plant and animal life in it.
8. a group of people of one nationality or ethnic group living in a foreign city or country.
9. economy is where a central government makes all economic decisions.
15. Principal Arterials these are highways in rural and urban areas which provide access between an arterial and a major port, airport, public transportation facility, or other intermodal transportation facility.
16. cold,treeless region in Arctic and Antarctic climates.
17. Reef rocky ocean features made up of millions of coral