Paul Krugman is one of the most influential economists of his generation, best known for explaining why nations with similar resources and technologies still trade heavily with one another — a puzzle traditional trade theory struggled to answer. Awarded the 2008 Nobel Memorial Prize in Economic Sciences “for his analysis of trade patterns and the location of economic activity,” Krugman’s work spans international trade, economic geography and Keynesian macroeconomics.
This article explains Krugman’s two major academic contributions — New Trade Theory, which uses economies of scale and product differentiation to explain intra-industry trade between similar countries, and New Economic Geography, including his influential core-periphery model of why economic activity clusters geographically. It also covers his Keynesian views on recessions, the liquidity trap, the paradox of thrift, and his policy positions during the 2008 financial crisis, along with his major works and public role as a long-time New York Times columnist. Useful for students of economics, public policy and UPSC or state civil services aspirants.
Author: Darshita Neeraj
Senior Researcher,
Mudita Learning and Knowledge Private Limited
Email: info@muditabooks.com
Date of post: 27.08.2026
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