ks ▁in ▁the ▁after math ▁of ▁the ▁ 1 0 7 1 ▁Battle ▁of ▁Man zik ert . The ▁subsequent ▁ ▁Cr us ader ▁victory ▁at ▁the ▁Battle ▁of ▁D ory la e um ▁( 1 0 9 7 ) ▁allowed ▁the ▁By z antine ▁Emperor ▁Alex ios ▁I ▁to ▁recover ▁Man isa . ▁It ▁was ▁an ▁important ▁regional ▁centre ▁under ▁By z antine ▁rule , ▁and ▁during ▁the ▁ 1 3 th - century ▁inter l ude ▁of ▁the ▁Empire ▁of ▁Nice a ▁of ▁ 1 2 0 4 ▁to ▁ 1 2 6 1 . ▁Mag nes ia ▁hous ed ▁the ▁Imperial ▁mint , ▁the ▁Imperial ▁tre as ury , ▁and ▁served ▁as ▁the ▁functional ▁capital ▁of ▁the ▁Empire ▁of ▁Nice a ▁until ▁the ▁recovery ▁of ▁Constantin ople ▁in ▁ 1 2 6 1 . ▁Ru ins ▁of ▁the ▁Nice an - era ▁fort ifications ▁att est ▁to ▁the ▁city ' s ▁importance ▁in ▁the ▁Late ▁By z antine ▁period , ▁a ▁fact ▁also ▁noted ▁by ▁the ▁By z antine ▁historian ▁George ▁Ak ropol ites , ▁writing ▁in ▁the ▁ 1 3 th ▁century . ▁ ▁Turkish ▁era ▁( S el j uk , ▁Sar u han ▁and ▁early ▁Ott oman ▁periods ) ▁▁ ▁In ▁the ▁early ▁ 1 3 th ▁century ▁the ▁region ▁of ▁Mag nes ia ▁was ▁subject ▁to ▁repeated ▁ra ids ▁by ▁inv ading ▁Turkish ▁bands . ▁The ▁local ▁population ▁was ▁unable ▁to ▁rep ulse ▁the ▁Turkish ▁ra ids . ▁Thus , ▁after ▁an ▁un success ful ▁defence