From 1900-1941 what was the key aim of American policy in Asia?

United States foreign policy between 1901 and 1941 can be characterized as generally confident, sometimes aggressive and, occasionally, even cautious.  The first twenty years of the century saw the U.S. leadership pursue confidently interventionist strategies in dealing with other countries.  The next decade-a-half witnessed a clear modification toward cautious non-entanglement if not outright isolationism.   With the election of Franklin Roosevelt to the White House a gap grew between the isolationist American public and an increasingly internationalist policy.  This gap temporarily disappeared with Japan’s attack on Pearl Harbor and America’s entry into World War II.

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