▁forces ▁at ▁the ▁Battle ▁of ▁C ep eda ▁( 1 8 5 9 ), ▁leading ▁to ▁the ▁P act ▁of ▁San ▁José ▁de ▁Fl ores ▁and ▁to ▁Buenos ▁Aires ' ▁recognition ▁of ▁the ▁Argent ine ▁Constitution . ▁Te jed or , ▁however , ▁r al lied ▁opposition ▁to ▁the ▁treat y , ▁and ▁in ▁particular , ▁its ▁prov isions ▁for ▁the ▁federal ization ▁of ▁the ▁Buenos ▁Aires ▁Custom s . ▁Ult imately , ▁these ▁disput es ▁led ▁to ▁the ▁Battle ▁of ▁Pav ón ▁( 1 8 6 1 ), ▁where ▁General ▁Bart ol om é ▁Mit re ' s ▁victory ▁allowed ▁Te jed or ▁and ▁other ▁Buenos ▁Aires ▁leaders ▁to ▁imp ose ▁terms ▁for ▁the ▁province ' s ▁read mission ▁into ▁Argentina . ▁ ▁Following ▁Mit re ' s ▁ 1 8 6 2 ▁election ▁as ▁President ▁of ▁Argentina , ▁Te jed or ▁was ▁charged ▁with ▁cod ifying ▁the ▁nation ' s ▁pen al ▁code . ▁He ▁was ▁elected ▁to ▁the ▁Argent ine ▁Chamber ▁of ▁Deput ies ▁in ▁ 1 8 6 6 , ▁and ▁was ▁appointed ▁Foreign ▁Minister ▁in ▁ 1 8 7 0 ▁by ▁President ▁Dom ingo ▁S arm iento . ▁His ▁ten ure ▁in ▁the ▁post ▁was ▁highlight ed ▁by ▁international ▁boundary ▁negoti ations ▁following ▁the ▁Par agu ay an ▁War . ▁ ▁Al leg ations ▁of ▁elect oral ▁fra ud ▁in ▁the ▁elections ▁of ▁ 1 8 7 4 , ▁in ▁which ▁Mit re ▁was ▁defeated ▁for ▁the ▁Pres iden cy , ▁led ▁to ▁another ▁revol t ▁by ▁the