An alliance with the Tang Dynasty of China permitted Silla to eventually conquer the whole of the Korean peninsula.
Unified Silla Dynasty, (668–935), dynasty that unified the three kingdoms of the Korean peninsula—Silla, Paekche, and Koguryŏ. The old Silla kingdom had forged an alliance with T’ang China (618–907) and had conquered the kingdom of Paekche to the southeast in 660 and the northern Korean kingdom of Koguryŏ—largest of the three—in 668.
This was the first occasion within historical times that the Korean peninsula had been unified under indigenous leadership. For nearly a decade after 668, fighting ensued in which Silla finally expelled Tang forces. Thereafter the Korean nation was divided for only brief transitional periods. Under the Silla dynasty, Korea, which was one of the earliest of the nation-states to emerge, assumed many of the cultural, linguistic, and geographic features it maintains today.
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