These settlements were concentrated in fertile river valleys: the Tigris and Euphrates in Mesopotamia, the Nile in Egypt, the Indus in the Indian subcontinent, and the Yangtze and Yellow Rivers in China.
Təmuqunen tən aqalanat amisadawan daɣ gar tuhun wan fluviales fertiles : Tigre əd Euphrate daɣ Mésopotamie, Nil daɣ Misr, Indus daɣ daw akal wan indientan, əd ebang wan Yangtze əd Waraɣan daɣ Chine.