The societies of Eurasia became progressively more connected to each other during the centuries discussed in this chapter. One element promoting connection was the military superiority of the nomadic warriors of the steppe: first the Turks, then the Mongols, who conquered many of the settled civilizations near them. Invading Turks brought Islam to India. Connection between societies also came from maritime trade across the Indian Ocean and East Asia. Maritime trade was a key element in the spread of Indian culture to both the mainland and insular Southeast Asia. Other elements connecting these societies included Sanskrit as a language of administration and missionaries who brought both Hinduism and Buddhism far beyond their homelands.

East Asia was a key element in both the empires created by nomadic horsemen and the South Asian maritime trading networks. As discussed in Chapter 13, before East Asia had to cope with the rise of the Mongols, it experienced one of its most prosperous periods, during which China, Korea, and Japan became more distinct culturally. China’s economy boomed during the Song Dynasty, and the scholar-official class, defined through the civil service examination, came more and more to dominate culture. In Korea and Japan, by contrast, aristocrats and military men gained ascendancy. Although China, Korea, and Japan all drew on both Confucian and Buddhist teachings, they ended up with elites as distinct as the Chinese scholar-official, the Korean aristocrat, and the Japanese samurai.