Eisenhower Doctrine pledged to support the help of any country resisting communist aggression.
the answer is the 3rd one.
Because I searched and it tells me about the place and the history so I
think it's number 3 if not it's 2.
Well they invented the abacus and the wheel
Contain the spread of communism
Opportunity cost is the value of the next best alternative forgone as a result of making a decision.