Is a communist government an autocracy???

Yes communist government is an autocracy.

Explanation:

Autocracy is defined the government where one party or power rules supremely.

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the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

because it took place after the war of 1812 had come to an end.