The growing complexity of human societies necessitated systems of writing and accounting.[citation needed] Many cities developed on the banks of lakes and rivers as early as 3000 BCE, when some of the first prominent, well-developed settlements had arisen in Mesopotamia ("the Land between the Rivers"),[4] on the banks of Egypt's Nile River,[5][6] in the Indus River valley,[7] and along the rivers of China.[8][9]
Kurharhangana loku kulaka ka miganga ya vanhu ku tswale tindlela to tsala na tinhlayo.[7] Madorobha yotala masimekiwe emabuweni ya milambu; kusungula hi 3000 BCE tindhzawu to tshama leti sasekeke ti akiwile e tikweni ra Mesopotamiya,[8] e ribuweni ra nambu wa Nayli e Gibita,[9][10][11] ribuwa ra nambu wa Indusi ,[12][13][14] na milambu leyi kulu ya Chayina.[15][16][17]