Oliver Volckart, an expert on Germany’s first common currency, shares insights from his upcoming book. He discusses the challenges posed by multiple currencies that harmed trade and governance. Volckart highlights how competitive debasements led to the realization that a common currency was essential. He also delves into the intrigue surrounding key negotiations and interest groups from the 16th century, emphasizing the Rhine River's critical role in shaping economic dynamics. Finally, he connects historical currency developments to modern monetary policies.