From the late 9th century on, population, agricultural production, and culture were centered

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The lower and eastern Yangtze region became the political, economic, and cultural center of China from the late 9th century on, due to its fertile land, convenient transportation routes, and strategic location. This area, also known as the "Jiangnan" region, was the home of the Song dynasty's capital, Hangzhou, and was the most densely populated and prosperous part of China at the time.

From the Late 9th Century On, Population, Agricultural Production, and Culture