The u. s. policy of meant that the u. s. would not interfere with nations that already had communist government. a containment b isolationism c conquring d dominence

d the united states

explanation: the united states is the only major industrialized country in the world that does not use the celsius scale and the metric system as its predominant system of measurement, according to a report released by the national institute of standards and technology

he suspenses the reader as the poems go on as we see in "the raven"