In Southeast Asia, the United States government used the domino theory to justify its support of a non-communist regime in South Vietnam against the communist government of North Vietnam, and ultimately its increasing involvement in the long-running Vietnam War (1954-75).
The number of voting representatives in the House is fixed by law at no more than 435, proportionally representing the population of the 50 states.
The House of Representatives has 435 members. The number of Representatives each state gets is based on the state's population. States with large populations have more representatives. For example, California has 52 Representatives, while North Dakota has just one.