T'ang China maintained an overlord-vassal relationship with

Question

Quizplus · Accepted Answer

T'ang China maintained an overlord-vassal relationship with Korea, which was known as Silla at the time. This relationship involved both cultural and political exchanges, as well as military protection. T'ang China also had diplomatic relations with Persia and Byzantium, but these were not overlord-vassal relationships. There is no evidence of an overlord-vassal relationship with India during the T'ang dynasty.

T'ang China Maintained an Overlord-Vassal Relationship with