Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/scarcity-and-growth/v/terms-of-trade-and-the-gains-from-trade-macroeconomics-khan-academy In this video, we explore how we can use opportunity costs to determine who has comparative advantage in producing a good. By specializing in the production of a good that a country has comparative advantage in, and trading for the other good, both countries have the potential to benefit from the exchange. We can also figure out a trading price (also known as the "terms of trade") which would make both countries willing to trade. View more lessons or practice this subject at http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/scarcity-and-growth/v/terms-of-trade-and-the-gains-from-trade-macroeconomics-khan-academy?utm_source=youtube&utm_medium=desc&utm_campaign=apmacroeconomics AP Macroeconomics on Khan Academy: Welcome to Economics! In this lesson we'll define Economic and introduce some of the fundamental tools and perspectives economists use to understand the world around us! Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc