The United States dollar has been central to the global financial system for decades. But what if that changes? We explore the history of dollar dominance from post-World War I to present-day challenges, and how the Bretton Woods system, the Nixon shock, and geopolitical forces shaped the global currency landscape. We review the benefits and costs of dollar hegemony for the U.S. and the rest of the world, as well as the internal and external threats facing the dollar system. Will the dollar maintain its supremacy, or will we see a new multipolar currency order? The answers are unfolding now. A Swedish national, born in Addis Abeba, Carla Norrlöf has lived in Stockholm, Gaborone, New York, Paris, Geneva and Toronto. Majoring in economics (B.A.) and political science (M.A.), she graduated from Lund University (Sweden). At the Graduate Institute of International Studies (Switzerland), she specialized in political economy and received a Diplôme d’Etudes Supérieures and a Ph.D degree in International Relations. Her research was supported by the Royal Swedish Academy and Handelsbankens Forskningstiftelser (Jan Wallanders and Tom Hedelius stiftelse).Carla Norrlöf has published on hegemony, the international political economy of trade, monetary relations, international currencies, and security, as well as in the area of trade and the environment. She has taught undergraduate and graduate courses on the international political economy of trade, the international political economy of finance, international cooperation and institutions, international relations and rational choice. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx