Explain the policy of Isolationism.

Isolationism is a category of foreign policies institutionalized by leaders who assert that nations' best interests are best served by keeping the affairs of other countries at a distance. One possible motivation for limiting international involvement is to avoid being drawn into dangerous and otherwise undesirable conflicts. There may also be a perceived benefit from avoiding international trade agreements or other mutual assistance pacts.

Explanation:

uncle sam would be tossing and turning in his grave : *)