Ming China and Tokugawa Japan chose isolation in the late 1400s and 1600s respectively. Ming China expanded through naval expeditions in the early 1400s but later destroyed records of the voyages and limited trade with Europeans. They focused on internal development, agriculture, and border security rather than further expansion or innovation. Similarly, Tokugawa Japan unified in the 1600s under the Tokugawa family but then imposed isolation, severely limiting European trade, missionaries, travel, and books to promote Japanese identity and development instead of external contacts.