We love talking about money. And of course, we love talking about the dollar, in all its varieties — from bank deposits to eurodollars to stablecoins. But what fundamentally is a dollar and who actually controls it? To understand these questions, you need to understand how the dollar was born. Journalist (and current Ph.D. candidate in financial history) Brendan Greeley argues not only that the dollar is older than you might suspect, but that the dollar long precedes the United States itself. In fact, the word is derived from German, referring to a Spanish currency made from silver found in Mexico. In this episode, we discuss Brendan's new book, The Almighty Dollar: 500 Years of the World's Most Powerful Money. He explains not only the dollar's surprising history, but also what actually backs the US dollar and gives it purchasing power.