Answer: B. Isolationism and neutrality
Step-by-step explanation:
When the first President of the United States, George Washington, stepped down from office, he admonished successors to be neutral in their dealings with foreign powers such that they do not form permanent alliances with foreign powers.
He advocated isolationism and non-involvement in the affairs of other nations which is the same policy he used when the French Revolution was going on. The United States more or less abided by this for decades until they increasing began to involve themselves in world affairs.