Robert A. Mundell, a Father of the Euro and Reaganomics, Dies at 88 His insights on global finance earned him a Nobel, while his more iconoclastic theories fostered the adoption of a single European currency and supply-side economics. Robert A. Mundell in 2011. “You have created modern open-economy macroeconomics,” one colleague wrote. “My generation of economists owe you all that we know.”Credit...Forbes Conrad/Bloomberg April 5, 2021Updated 6:36 p.m. ET Robert A. Mundell, a Nobel Prize-winning economist whose theorizing opened the door to understanding the workings of global finance and the modern-day international economy, while his more iconoclastic views on economic policy fostered the creation of the euro and the adoption of the tax-cutting approach known as supply-side economics, died on Sunday at his home, a Renaissance-era palazzo that he and his wife restored, near Siena, Italy. He was 88.