states ▁in ▁the ▁south ▁and ▁founded ▁the ▁A kk ad ian ▁dynast y , ▁the ▁world ' s ▁first ▁emp ire ." ▁ ▁During ▁this ▁same ▁time ▁period , ▁S arg on ▁the ▁Great ▁appointed ▁his ▁daughter , ▁En h edu anna , ▁as ▁High ▁Pri est ess ▁of ▁In anna ▁at ▁Ur . ▁Her ▁writ ings , ▁which ▁established ▁her ▁as ▁the ▁first ▁known ▁author ▁in ▁world ▁history , ▁also ▁helped ▁c ement ▁S arg on ' s ▁position ▁in ▁the ▁region . ▁ ▁Egypt ▁ ▁So on ▁after ▁the ▁S umer ian ▁civil ization ▁began , ▁the ▁N ile ▁valley ▁of ▁Lower ▁and ▁Upper ▁Egypt ▁was ▁un ified ▁under ▁the ▁Ph ara oh s ▁approximately ▁around ▁ 3 1 5 0 ▁BC . ▁Since ▁then , ▁An cient ▁Egypt ▁experienced ▁ 3 ▁high ▁points ▁of ▁civil ization , ▁the ▁so - called ▁" K ing dom " ▁periods : ▁ ▁The ▁Old ▁Kingdom ▁( 2 6 8 6 – 2 1 8 1 ), ▁ ▁The ▁Middle ▁Kingdom ▁( 2 0 5 5 – 1 6 5 0 ) ▁and , ▁most ▁not ably , ▁ ▁The ▁New ▁Kingdom ▁( 1 5 5 0 – 1 0 6 9 ). ▁The ▁history ▁of ▁An cient ▁Egypt ▁is ▁concluded ▁by ▁the ▁Late ▁Period ▁( 6 6 4 – 3 3 2 ▁BC ), ▁immediately ▁followed ▁by ▁the ▁history ▁of ▁Egypt ▁in ▁Class ical ▁Anti qu ity , ▁beginning ▁with ▁P to le ma ic ▁Egypt . ▁ ▁The ▁Lev ant ▁and ▁An