This is the overall, general name for the u. s. foreign policy designed to stop the spread (domino effect) of communism.

What happens in puerto rico in 2012 to celebrate the anniversary of clemente's 3000th hit

How did the romanov dynasty increase russia's power?

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.