East Asia at the Center: Four Thousand Years of Engagement with the WorldA common misconception holds that Marco Polo "opened up" a closed and recalcitrant "Orient" to the West. However, this sweeping history covering 4,000 years of international relations from the perspective of China, Japan, Korea, and Southeast Asia shows that the region's extensive involvement in world affairs began thousands of years ago. In a time when the writing of history is increasingly specialized, Warren I. Cohen has made a bold move against