uc um án . ▁By ▁that ▁time , ▁the ▁First ▁Tri um vir ate ▁was ▁replaced ▁by ▁the ▁Second ▁Tri um vir ate , ▁which ▁provided ▁greater ▁support ▁for ▁Bel gr ano . ▁The ▁Second ▁Tri um vir ate ▁called ▁the ▁Assembly ▁of ▁Year ▁XIII ▁soon ▁after ▁taking ▁power , ▁which ▁was ▁intended ▁to ▁declare ▁independence ▁and ▁en act ▁a ▁national ▁constitution , ▁but ▁failed ▁to ▁do ▁so ▁because ▁of ▁political ▁disput es ▁between ▁the ▁members . ▁It ▁did ▁not ▁take ▁measures ▁regarding ▁the ▁national ▁flag , ▁but ▁allowed ▁Bel gr ano ▁to ▁use ▁the ▁blue ▁and ▁white ▁flag ▁as ▁the ▁flag ▁of ▁the ▁Army ▁of ▁the ▁North . ▁ ▁After ▁the ▁defeat ▁in ▁T uc um án , ▁Tr ist án ▁g arrison ed ▁at ▁the ▁city ▁of ▁Sal ta ▁with ▁ 2 , 5 0 0 ▁men . ▁Bel gr ano , ▁with ▁rein for c ements ▁from ▁the ▁government , ▁intended ▁to ▁gather ▁ 4 , 0 0 0 ▁men ▁and ▁march ▁to ▁Upper ▁Peru , ▁up ▁to ▁the ▁border ▁of ▁the ▁Vic ero yal ty ▁of ▁Lima . ▁The ▁Battle ▁of ▁Sal ta , ▁the ▁first ▁battle ▁with ▁the ▁new ▁approved ▁b anner , ▁was ▁a ▁decis ive ▁victory , ▁ending ▁with ▁the ▁capit ulation ▁of ▁P ío ▁Tr ist án ▁and ▁all ▁of ▁his ▁army . ▁ ▁These ▁vict ories ▁ens ured ▁Argent ine ▁authority ▁in ▁the ▁north west ▁and ▁stopped ▁the ▁royal ist ▁advance ▁into ▁the ▁central ▁territory . ▁Although ▁there ▁were ▁a ▁number ▁of ▁colonial ist