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.
In the House of Representatives there are 435 members. States are divided into districts based on their population. For every 693,000 people, a state will have one district. Tennessee has nine districts, and therefore nine members of the House of Representatives.