ot . ▁This ▁new ▁technology ▁was ▁quickly ▁adopted ▁by ▁the ▁Egypt ians , ▁who ▁succeeded ▁in ▁exp elling ▁the ▁inv aders ▁at ▁the ▁start ▁of ▁the ▁New ▁Kingdom ▁in ▁the ▁ 1 6 th ▁century ▁BC . ▁ ▁The ▁rev ital ized ▁Egypt ians ▁expanded ▁north ▁and ▁east ▁into ▁E uras ia ▁to ▁the ▁A ege an ▁and ▁into ▁much ▁of ▁the ▁Lev ant , ▁as ▁far ▁as ▁the ▁Eu phr ates ▁River . ▁Egypt ▁also ▁moved ▁west ▁into ▁Lib ya ▁and ▁south ▁into ▁Sud an . ▁ ▁The ▁grad ual ▁dis integration ▁in ▁the ▁Tw enti eth ▁D ynast y ▁allowed ▁the ▁found ing ▁of ▁the ▁K ush ite ▁kingdom s ▁of ▁N ub ia , ▁centered ▁on ▁Nap ata . ▁K ush ▁reached ▁a ▁height ▁under ▁Pi ye , ▁who ▁conquer ed ▁Egypt ▁and ▁founded ▁the ▁Tw enty - fif th ▁D ynast y . ▁However , ▁the ▁K ush ites ▁were ▁gradually ▁driven ▁back ▁to ▁Nap ata ▁by ▁an ▁Ass y rian ▁invasion ▁and ▁then ▁the ▁resistance ▁of ▁the ▁Tw enty - six th ▁D ynast y ▁k ings . ▁ ▁An cient ▁A ks um ite ▁military ▁history ▁ ▁The ▁Kingdom ▁of ▁Ax um ▁had ▁one ▁of ▁the ▁most ▁powerful ▁militar ies ▁in ▁the ▁world ▁during ▁its ▁era . ▁It ▁was ▁compared ▁with ▁Rome ▁and ▁other ▁world ▁powers ▁of ▁the ▁time . ▁The ▁Empire ▁ruled ▁vast ▁territ ories ▁from ▁today ' s ▁western ▁Y emen , ▁Dj ib out i , ▁south western ▁Sa udi ▁Arab ia , ▁eastern