DDURING THE NINETEENTH CENTURY, while China’s standing in the world plummeted, Japan’s was rising. During the eighteenth century Japan (much more effectively than China) kept foreign merchants and missionaries at bay. It limited trade to a single port (Nagasaki), where only the Dutch were allowed, and forbade Japanese to travel abroad. Because Japan’s land and population were so much smaller than China’s, the Western powers never expected much from Japan as a trading partner and did not press it as urgently. Still, the European threat was part of what propelled Japan to modernize.