Much of the momentum generated for the spread of Buddhism from India to distant regions of Asia by the patronage of expanding empires. This chapter reviews the spread of Buddhism into Korea's three largest kingdoms. Of the three great Korean kingdoms to emerge during the fourth century AD, the first was Koguryo. Paekche, the second independent kingdom to surface, was somewhat slower to adopt Chinese methods and religious practices, for its position southwest of Koguryo made it impossible for its envoys to reach the Chinese court without crossing either Koguryo or the North China Sea. The third Korean kingdom to be born in that fourth century was Silla. Buddhism continued to be affected by the worship of kami. Kami belief seems also to have increased resistance to the basic Buddhist teaching that an individual could achieve enlightenment only by eliminating attachments to life of this world.