Three, governments have decreased tariffs and regulations on international trade, leading to what is sometimes called, euphemistically, free trade. To which I say, if this trade is so free, how come BBC America is in the premium tier of my cable package? To understand the role that governments play in international trade, let's look again at this t-shirt. This t-shirt, like most t-shirts made in the world, contains 100% American cotton. And that's not because the US makes the best cotton or the most efficient cotton, it's because the US government subsidizes cotton production. And that's what makes this cotton cheaper than cotton of similar quality from Brazil or India. But in the last 30 years, the US's share of cotton exports has gone down as Brazil, India, and Africa's cotton exports go up.