Witch you innovations developed in tang and song china

Tech innovation,agrarian expansion and commercial enterprise both home and overseas in Tang & Song,China.All these things became possible because of centralized control & a strong military  which brought periods of peace during which ruling elites flourished.During the Tang Dynasty, resources enabled military authorities to mount large campaigns.• Tang armies conquered much of Korea.To avoid conflict, they agreed to a compromise.Chinese forces left Korea and the Silla king recognized the Tang emperor as his overlord. Korea entered a tributary relationship with China.

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.

they spoke the dravidian language. hope this , correct me if im wrong