▁and ▁maintain ing ▁its ▁republic an ▁institutions . ▁This ▁is ▁back ed ▁by ▁a ▁stat ute ▁from ▁ 1 3 0 1 , ▁which ▁demonstr ates ▁that ▁Kot or ▁had ▁the ▁status ▁of ▁a ▁city ▁under ▁Ser bian ▁rule . ▁In ▁the ▁ 1 4 th ▁century ▁the ▁commerce ▁of ▁C att aro , ▁as ▁named ▁in ▁Latin ▁scripts ▁( in ▁Ser bian ▁Ко тор , ▁град ▁кра љ ев / K ot or , ▁city ▁of ▁the ▁King ), ▁riv aled ▁that ▁of ▁Republic ▁of ▁R ag usa , ▁and ▁caused ▁the ▁Republic ▁of ▁Ven ice ▁to ▁be ▁en vious . ▁Kot or ▁remained ▁the ▁most ▁important ▁trad ing ▁port ▁of ▁subsequent ▁Ser b ▁states ▁– ▁Kingdom ▁of ▁Ser bia ▁and ▁Ser bian ▁Empire , ▁up ▁to ▁its ▁down fall ▁in ▁ 1 3 7 1 . ▁ ▁After ▁the ▁f ract uring ▁of ▁the ▁Ser bian ▁Empire , ▁the ▁city ▁was ▁taken ▁by ▁the ▁Kingdom ▁of ▁Hung ary , ▁only ▁to ▁change ▁hands ▁repeatedly ▁between ▁them ▁and ▁the ▁Republic ▁of ▁Ven ice ▁in ▁the ▁period ▁between ▁ 1 3 7 1 – 1 3 8 4 . After ▁that , ▁Kot or ▁was ▁held ▁by ▁the ▁Kingdom ▁of ▁Bos nia ▁ ▁under ▁T v rt ko ▁I ▁Kot rom ani ć ▁between ▁ 1 3 8 4 – 1 3 9 1 . ▁The ▁king ▁of ▁Bos nia , ▁who ▁claimed ▁the ▁Ser bian ▁throne , ▁mint ed ▁his ▁co ins ▁in ▁Kot or . ▁ ▁After ▁the ▁death ▁of ▁T