What History's Greatest Currencies Tell Us About the Future of the Dollar | Barry Eichengreen

International currency status requires a combination of robust economic trade power and stable political institutions that limit the arbitrary debasement of money. Historical evolution from ancient Lydian coinage to the sophisticated financial networks of Renaissance Florence and the Dutch Republic demonstrates a persistent trend toward increasing abstraction in economic transactions. While physical specie like the Spanish silver dollar once lubricated global trade, modern hegemony relies on deep financial markets and the ability to issue credible credit. The US dollar currently faces significant challenges to its preeminence, driven by domestic political volatility and the rise of decentralized digital alternatives. Whether the global system shifts toward a new dominant currency or enters a period of fragmentation depends on the continued ability of the United States to maintain the institutional trust that underpins its global financial infrastructure.