Nàkádà Kẹta ni igba to pari igba Nawada to siwaju igba Egypti ayeijoun, igba na bere lati 3200 de 3000 SK. Igba yi gan ni igbese to da orileijoba sile, to ti bere lati igba Nakada keji, bere daada, pelu awon oba olori. Nakada Keta tun unje titokasi bi Iran-oba 0 tabi Igba Iran-oba akobere lati fihan pe oba olori wa nibe otilejepe oba yi le mo je lati iran-oba kankan. Shaw, Ian, ed (2000). The Oxford History of Ancient Egypt. Oxford University Press. p. 479. ISBN 0-19-815034-2.  Shaw, Ian, ed (2000). The Oxford History of Ancient Egypt. Oxford University Press. p. 479. ISBN 0-19-815034-2.