Answer: Isolationism
Explanation:
Isolationism could be described as a policy of not joining with other countries on terms that would render the efforts of your country obsolete. Isolationism targets a nation isolating themselves from being alliance with other nations which affects their own growth and development.
In President George farewell speech he laid this instruction which is one of America's cornerstone of foreign policies. He stated it for it to be emphasized and for the security in the growth of the nation.