President-elect Donald Trump has said, "the most beautiful word in the dictionary is tariff, and it’s my favorite word." So what are they? Why might the United States raise or lower a tariff on goods from another country? How has America used tariffs throughout our history? And how might Donald Trump's proposed tariffs affect the cost of goods in the US?

Taking us through tariffs is Dr. Shannon O'Neil, senior vice president and director of studies at the Council on Foreign Relations.

• WIN A NEW CAR OR 25K IN CASH DURING NHPR'S SUMMER RAFFLE! GET YOUR TICKETS HERE.
• CLICK HERE: Visit our website to see all of our episodes, donate to the podcast, sign up for our newsletter, get free educational materials, and more!
• To see Civics 101 in book form, check out A User's Guide to Democracy: How America Works by Hannah McCarthy and Nick Capodice, featuring illustrations by Tom Toro.
• Check out our other weekly NHPR podcast, Outside/In - we think you'll love it!