Answer: Two Years
Explanation: Members of the House of Representatives serve two-year terms and are each year eligible for re-election. However, Senators serve six-year terms and Senate elections are distributed over even years so that only around 1/3 of the Senate is up for reelection in each year.
The main purpose of the Truman Doctrine was "<span>to contain Soviet expansion," since it stated that Soviet aggression would be met with American pressure, since this was during the Cold War. </span>