The United States is described as a republic, a federation, and a constitutional democracy. So, what is it? Are those terms interchangeable? And, while we're at it, what's the difference between totalitarianism, despotism, and dictatorship? Political science professor Seth Masket digs into the 'isms, 'cracies, and 'archies for a brief primer on different forms of government.  Sign up for the Extra Credit newsletter: civics101podcast.org #civics101pod