1. Domino Theory
The theory that if one nation in Asia falls to communism, the rest will follow

2. Communism
The government owns everything and is responsible for providing equally for all; no social classes

3. People vote for their government representatives
Democracy
People vote for their government representatives

4. Capitalism
Individuals and people have the freedom to own their own businesses and make a profit; social classes

5. Balance of Power
Nations of the world strive to have roughly equal power with one another

6. Proxy War
A war started by a major power/country, but they don’t get directly involved

7. Not allowing communism to spread to any more nations
Containment
Not allowing communism to spread to any more nations

8. An area of land where it’s forbidden to station military forces
Demilitarized Zone
An area of land where it’s forbidden to station military forces

9. Iron Curtain
An imaginary line that divided Europe between communist countries and “free” or democratic countries

10. A military alliance between communist countries
Warsaw Pact
A military alliance between communist countries

11. NATO
“North Atlantic Treaty Organization” – Military alliance between democratic countries