© Shanghai Jiao Tong University Press and Springer Nature Singapore Pte Ltd. 2018. All rights reserved. This book investigates the industrial agglomeration and dispersion within a country under trade liberalization and interregional integration by considering both economic forces and geographical elements. Chapter 1 gives a brief introduction about the background, research topics and organizations in this book. Chapter 2 provides a detailed explanation of Krugman's new economic geography (NEG) model and reviews the subsequent refinements of the original model from mainly geographical viewpoints. Chapter 3 extends Krugman's original model to a two-country and three-region case where the domestic regions are fully asymmetrical in terms of the...