How did the Silla turn Korea into an economic and cultural center?

A.
by giving greater independence to the aristocracy

B.
by establishing trade networks between Japan, China, and India

C.
by freeing Korea from the influence of the Tang dynasty

D.
by carrying Confucian and Buddhist ideas to Japan

B. by establishing trade networks between Japan, China, and India. The Silla kingdom actively traded with these neighboring regions, bringing in new ideas, technologies, and cultural practices. This helped to stimulate economic growth and cultural exchange within Korea, making it a center of commerce and innovation.