What Is One Important Way in Which Central Political Principles

What is one important way in which central political principles of the United States government have had a major effect on United States foreign policy?

A) The United States has usually supported movements in foreign countries to give all citizens basic economic rights.
B) The United States has played a leading role in the international environmental movement.
C) The United States has supported the growth of Western-style democracy in countries that were once communist dictatorships.
D) The United States has consistently encouraged its allies to develop federal systems of government.