Answer: Under the Silla kings, Korea C. was at peace and prospered.
Step-by-step explanation:
The Silla kingdom was one of the Three Kingdoms of Korea, along with Goguryeo and Baekje. During the reign of the Silla kings, the kingdom was at peace and enjoyed a period of prosperity, as evidenced by the development of a rich and sophisticated culture. This era was marked by advances in art, literature, and architecture, and by the growth of Buddhism as a dominant religion. The Silla dynasty eventually united the Three Kingdoms of Korea and established the Unified Silla Kingdom, which was a period of peace and prosperity for the Korean peninsula.