Nyuzipepala yaku Mexico yomwe idakhazikitsidwa kumapeto kwa 1841 ndipo chilengedwe chake chidatsata zoletsa zomwe boma lidapereka atolankhani ndikukhazikitsa New Constituent Congress yomwe idabwezeretsa mphamvu ku Antonio López de Santa Anna mu Seputembala chaka chimenecho.
Pomwe a Diario del Gobierno adadzudzula kongeresi kuti "idabwerera nthawi ya chipwirikiti," boma lidapondereza omasula: pa Juni 4, 1842, idatulutsa mawu ozungulira osanyalanyaza fuelos mu milandu ya atolankhani; ndipo mu Julayi Juan B. Morales, woweruza wa Khothi Lalikulu komanso membala wa boma, adamangidwa chifukwa cholemba za momwe gulu lankhondo lidasindikizidwira patsamba la M'zaka za zana la khumi ndi zisanu ndi zinayi.
Morales anali atasindikiza m'nyuzipepala yake zolemba zake zodziwika bwino zotsutsana ndi boma "El Gallo Pitágorico."
Nicolás Bravo atayamba kulamulira mu Novembala 1842, adasiya atolankhani popanda zitsimikiziro, boma lake silinali lalifupi chifukwa pa Disembala 18 chaka chomwecho, monga zidakhazikitsidwa mu pulani ya San Luis Potosí, Nyumba Yamalamulo idalanda Congress. Nyuzipepala yayikulu yotsutsana ndi izi inali M'zaka za zana la khumi ndi zisanu ndi zinayi ndi zotsatira zowonekeratu: koyambirira kwa Meyi 1843, Mariano Otero, Gómez Pedraza, Riva Palacio ndi Lafragua adamangidwa chifukwa choukira boma. Anamangidwa mosasunthika kwa mwezi umodzi.
Komabe, patadutsa miyezi ingapo, Santa Anna adagwetsedwa ndikusinthidwa ndi Joaquín de Herrera, wamalingaliro oyenera. Boma ili lidathandizidwa ndi manyuzipepala otsatirawa: Kuwunika kwa Constitutional, Bungwe la National Union, Woteteza Malamulo Y M'zaka za zana la khumi ndi zisanu ndi zinayi.
Mu 1845, nyuzipepala iyi yaku Republican idachita zankhanza pamaganizowo oti a Tagle ndi ena owasunga akufuna kuti abweretse dzikolo: kubwerera ku amfumu. M'zaka za zana la khumi ndi zisanu ndi zinayi (yomwe idasinthidwa kwakanthawi ndi Chikumbutso cha mbiriyakale ndikusandulika mu Marichi chaka chimenecho kukhala Republican, ngakhale itadzadzatchulidwanso pambuyo pake), El Espectador, la Reforma, ndi Don Simplicio, wolemba sabata lolemba lolembedwa ndi Ignacio Ramírez, Guillermo Prieto ndi owolowa manja ena achichepere, adatsogolera gulu lotsutsa-monarchist, lokulitsidwa ndimapepala ndi zofalitsa zambiri.
Pofika chaka cha 1851 M'zaka za zana la khumi ndi zisanu ndi zinayi Chidakhala chiwalo cha Puro (wowolowa manja) Party - chifukwa chosintha kwakanthawi kwamanenedwe omwe Francisco Zarco adawonekera - ndipo adaitanitsa atolankhani onse kuti adzatenge nawo gawo pazokambirana pazomvera zamalamulo omwe anali akufuna Mariano Arista, popeza msonkhanowo udakhudzana ndi mfundo zakunja kwa dzikolo.
Zinali chonchi M'zaka za zana la khumi ndi zisanu ndi zinayi adasinthika kukhala otsutsa ndipo adazunzidwa Malamulo oyendetsera dziko lino, nyuzipepala yovomerezeka, komanso Chiyembekezo. Francisco Zarco, mkonzi wamkulu wa M'zaka za zana la khumi ndi zisanu ndi zinayi adazunzidwa ngakhale anali membala wa Congress.
Moyo wa nyuzipepalayi udayamba kufupikitsidwa: pa Seputembara 22, 1852, lamulo la Arista lidasindikizidwa loletsa chilichonse chomwe chimakondera opanduka a Jalisco, kapena kutsutsa mwanjira iliyonse, kulembedwa munyuzipepala. kwa olamulira. M'zaka za zana la khumi ndi zisanu ndi zinayi zinawoneka zopanda kanthu tsiku lomwelo ndipo lotsatira ndipo boma linayenera kukonza ndikubwezeretsanso. Atolankhani amchigawochi komanso likulu lawo adapereka ndemanga zowawa komanso zosagwirizana ndi zomwe zidachitikazi.
Chaka chotsatira, pa Epulo 25, lamulo la Lares la ufulu wa atolankhani lidatulutsidwa, dziko lopondereza kwambiri mdzikolo silinadziwepopo, ndipo zotsatira zake zidakwanira: m'chigawo chonse ndi manyuzipepala ovomerezeka ndi M'zaka za zana la khumi ndi zisanu ndi zinayi idasandulika nyuzipepala yosavuta yazolengeza komanso nkhani.
