What foreign policy did the United States follow in the period immediately following World War I?

Isolationism - Usually

Explanation:

Isolationism is the most common answer, however this did not happen until the 1930's. During the 1920's more recently after the war, the U.S adopted policies that were meant to prevent war, but still engaged with other countries. Make sure you understand the full intent of the question.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,