 Nyorai kupfuurira kweiyi ndima - Bumbiro reUnited States rakanyorwa paCongress yePhiladelphia muna 1787uye yakasimbiswa nenyika muna 1788, ichitanga kushanda muna 1789. Mukati mama 1780, United States yakanga yashanda pasi peMashoko eConfederation, ayo zvikurukuru akanga ari chibvumirano chenyika gumi nenhatu dzinotonga. Zvinetso zvomutemo womunyika nomune dzimwe nyika zvakagutsa vakawanda muUnited States nokuda kwedikanwo yebumbiro idzva iro raigovera hurumende yenyika yakasimba zvikuru. Vatsigiri vokubvumidzwa kweBumbiro reMutemo vainzi vaFederalist nepo vaipikisa vainzi vaAnti-Federalist. Chinetso chaicho chakatarisana nevaFederalist chakanga chisiri chokungobvuma Bumbiro asi kunetsekana kukuru kwekodzero yehurumende yerudzi rutsva. Nechinetso ichi mupfungwa, hurumende itsva yenyika yaifanira kuita nepfungwa yokuti chiito chimwe nechimwe chakanga chichiitwa kwenguva yokutanga uye nokudaro chaizova nechinangwa chikuru uye chaizorangarirwa mumitsetse yezvinoreva zviratidzo pamwe chete nezvakashandiswa. Sarudzo dzokutanga dzokuCongress itsva yeUnited States dzakadzorera zvizhinji zvikuru zveFederalist. George Washington, uyo akanga atungamirira Musangano wePhiladelphia, akasarudzwa nomwoyo wose saPurezidhendi wokutanga weUnited States neElectoral College. 