The Evolution of Money Over 2,500 Years | Barry Eichengreen | Professor of Economics and Political Science at the University of California, Berkeley | Season 13 Episode 14 | #235

In this episode, I sit down with Barry Eichengreen, Professor of Economics and Political Science at the University of California, Berkeley, to trace the evolution of money across more than 2,500 years of history. We begin with the Lydian king Croesus and the invention of coinage, exploring how early societies transitioned from commodity money to state-backed currencies. Barry explains how monetary systems spread through empires, how technological innovations like paper money and credit transformed exchange, and how each shift reshaped global power.Our conversation then turns to the rise of dominant global currencies, from the Roman solidus to the British pound and eventually the U.S. dollar. We examine what it actually means for a currency to be “dominant,” why the dollar is used in transactions even when the United States is not involved, and what economic, political, and military conditions make a currency globally trusted. Barry outlines the advantages of dollar dominance, including lower borrowing costs, safe-haven flows, and geopolitical leverage, while also explaining the risks that come with debt, political instability, and institutional decline.What stayed with me most is the historical perspective. Monetary systems do not last forever. They evolve, rise, and sometimes collapse as technology, power, and institutions change. From coinage to fiat money to digital currencies and crypto, the story of money is ultimately a story about coordination, trust, and political authority. This episode places today’s debates about the dollar and digital currency into a much larger historical arc.Chapters:00:00 – Introduction01:37 – Writing Money Beyond Borders03:30 – The Lydians and the Birth of Coinage06:20 – From Commodity Money to Paper and Credit10:00 – Money as Social Convention and State Authority14:15 – Multiple Currencies and Local Systems17:00 – Why Global Monetary Systems Rise and Fall Faster Over Time21:40 – What Makes a Currency “Dominant”?24:50 – The Dollar as Global Lingua Franca27:55 – The Advantages of Dollar Dominance31:40 – Debt, Political Stability, and Currency Decline35:50 – Teaching Economics: Models vs. History42:45 – Living in a World of Black Boxes49:30 – Individuals Who Shape Monetary History52:10 – Final Reflections on the Future of Money