President George W. Bush delivers a speech at the National Endowment for Democracy in the Ronald Reagan Building in Washington, D.C., Oct. 6, 2005. The U.S. has long used the promotion of democracy ...

Editor’s Note: This article is part of “The Unfinished Revolution,” a project exploring 250 years of the American experiment. “We hold these truths to be self-evident, that all men are created equal.” ...