Afro-American Famine

As famine led to civil turmoil in central and western Afro-Eurasia, bands of pastoral nomads from the Inner Eurasian plains increasingly endangered the societies of the riverine cities. Transhumant herders advanced on the cities seeking provisions for themselves and their herds. The ability of nomads and transhumant herders to adapt more quickly to the changing environmental conditions became the facilitator for the rise of new territorial states, which would adopt new skills that allowed them to flourish in the new environment.
The temperature changes and drought at the end of the third millennium BCE led nomadic and transhumant people to search for water sources and pasturelands. Many began to move into the river basins and contend with established