WORLD HISTORY

Detailed explanation-1: -Rice was the major food crop in the south and, therefore, widely planted in both the Yangtze River region and the South-eastern region (Fig.

Detailed explanation-2: -After 4000 cal BP, Eight crop types of foxtail millet, broomcorn millet, rice, wheat, barley, oats, soybean and buckwheat appeared together in Huanghe River valley, which suggest the earliest complexity agriculture in East Asia.

Detailed explanation-3: -The most important crop was rice in all periods of Neolithic Age, while foxtail millet seemed to be the second in importance in the Neolithic but became the dominant staple in the Bronze Age.

Detailed explanation-4: -Our results indicate the agricultural civilization in the Yangtze River Basin greatly relied on rice production, and domesticated a large amount of fruit and aquatic vegetable crops, which reflects the adaptation and dependence to local subtropical evergreen broad-leaved forests and wetlands.

Detailed explanation-5: -The region of eastern China, particularly the Yangtze River is thought to be the point of origin for rice cultivation and domestication, among many other theories.