. ▁The ▁en su ing ▁period ▁following ▁ 1 6 3 9 ▁was ▁marked ▁by ▁peace ▁and ▁prosper ity ▁in ▁the ▁province . ▁At ▁the ▁end ▁of ▁the ▁sevent e enth ▁century , ▁the ▁E riv an ▁Province ▁had ▁become ▁a ▁centre ▁of ▁Catholic ▁mission ary ▁activities ▁in ▁the ▁emp ire . ▁ ▁In ▁ 1 6 7 9 , ▁the ▁province ▁was ▁the ▁ep ic enter ▁of ▁an ▁earth qu ake , ▁which ▁resulted ▁in ▁the ▁destruction ▁and ▁dam aging ▁of ▁numerous ▁notable ▁structures . ▁ ▁In ▁ 1 7 1 4 , ▁the ▁mayor ▁( kal ant ar ) ▁of ▁the ▁provincial ▁capital , ▁Moh amm ad ▁Re za ▁Beg , ▁was ▁appointed ▁as ▁the ▁new ▁amb assador ▁to ▁France , ▁and ▁led ▁the ▁emb ass y ▁to ▁Louis ▁XIV ▁of ▁ 1 7 1 5 . ▁ ▁In ▁ 1 7 2 4 , ▁the ▁Ott om ans ▁and ▁the ▁Rus si ans ▁inv aded ▁the ▁cr umb ling ▁emp ire . ▁By ▁the ▁Tre aty ▁of ▁Constantin ople ▁( 1 7 2 4 ), ▁they ▁agreed ▁to ▁divide ▁the ▁conquer ed ▁territ ories ▁between ▁them . ▁Per ▁the ▁treat y , ▁the ▁Ott om ans ▁gained ▁the ▁territory ▁of ▁the ▁E riv an ▁Province . ▁ ▁By ▁ 1 7 3 5 , ▁N ader - Q oli ▁Beg ▁( l ater ▁known ▁as ▁N ader ▁Shah ) ▁had ▁restored ▁the ▁Saf avid ▁s way ▁over ▁the ▁C au cas us , ▁including ▁the ▁E riv an ▁Province .