 Ramba uchinyora ndima iyi - Pashure pokutenga Louisiana muna 1803, muganhu pakati peUnited States neNew Spain wakanga usina kunyatsojekeswa. Muganhu wacho wakagadzwa mu1819 Adams-Onís Chibvumirano pakati peUnited States neSpain, iyo yakatsanangura muganhu uri pedyo nemucheto wekumadokero kweRwizi rweMississippi rwizi. Mexico yakawana rusununguko rwayokubva kuSpain, uye muganhu wacho wakasimbiswazve mu1828 Chibvumirano cheMiganhu. 