The Tang dynasty eventually splintered, however, and after half a century of turmoil the Northern Song Dynasty reunified China in 982, yet pressure from nomadic empires to the north became increasingly urgent.
The Tang dynasty eventually splintered, however, and after half a century of turmoil the Song Dynasty reunified China, making it the richest, most skilled, and most populous country on Earth. Pressure from nomadic empires to the north became increasingly urgent.