Respuesta :
Crowded Cities. First in the Tigris-Euphrates and Nile Rivervalleys, then the Indus valley, and later in China s Huang River(Huang He) valley and a few other regions, societies emerged that were far larger and denser than the farming communities of the Neolithic period.
Answer: Nile, Tigris and Euphrates, Ganges, Indo, and Yellow River.
Explanation: The main agricultural societies arose along the rivers Nile (Egypt), Tigris and Euphrates (Mesopotamia), Ganges and Indo (India) and Yellow River (China) and it was precisely in each of these empires where thanks to these affluents and to its imposing geographical conditions, prosperous societies became important, since agriculture was the axis of its economy, which contributed greatly to its population growth and to turn its small cities into large metropolises due to its development and high agricultural production.