Economics & Finance / Macroeconomics / International Trade & Globalization

How Social and Business Networks Quadruple Trade: Shocking Evidence from France

Think borders and distance kill trade? Think again. This study from the Journal of International Economics reveals a game-changing truth: social networks (migrants) and business networks (corporate groups) don't just help trade—they can multiply it by up to 4 times. Using data from 94 French regions in 1993, researchers found that ignoring these networks makes us massively overestimate the cost of distance and borders. In fact, the infamous 'border effect' is largely a statistical illusion—a mirage created by the fact that networks cluster within boundaries. Key findings: migrant networks double trade; business networks triple or quadruple it; and controlling for networks slashes the estimated impact of transport costs by up to 70%. This isn't just theory—it's a practical blueprint for policymakers and businesses. Watch to understand how real connections, not just geography, shape global trade.