Between 618 and 1126 CE, most of the Chinese population concentrated in central and south China.
Explanation:
This period of the history of China was marked by several different dynasties: The Tang dynasty (618-907), the Five Dynasties and Ten Kingdoms period (907-979), the Liao dynasty (916-1125), and the Song dynasty (960-1279). The Tang dynasty ruled most of central and south China, with a claim to the north, before it collapsed in 907. The Five Dynasties and Ten Kingdoms fought over control of central and south China for decades, while the Liao dynasty ruled over Manchuria to the north for almost two centuries. The Song dynasty eventually reunified most of China. It was only after the Song dynasty had firmly established itself that north China became more populated, in large part thanks to expanding rice production in <u>central and south China, which at the time were most of the population concentrated.</u>
