Bayan juyin juya hali na 1848 da bai yi nasara ba, Manyan Mahukunta sun ki amincewa da sha'awar Romawa a hukumance a hukumance a cikin kasa guda, wanda ya tilasta wa Romawa su ci gaba su kadai a gwagwarmayar da suke yi da Daular Ottoman .^[74]Sakamakon daular Rasha ta sha kashi a yakin Crimean ya kawo yerjejeniyar Paris ta 1856, wacce ta fara lokacin koyarwa na gama gari ga Ottomans da Majalisar Manyan Mahukunta - Burtaniya ta Burtaniya da Ireland, Daular Faransa ta biyu, Masarautar Piedmont-Sardinia, Daular Austriya, Prussia, kuma, kodayake ba a sake cikawa ba, Rasha.Yayin da yakin neman zaben Moldavia-Wallachia, wanda ya mamaye bukatun siyasa, ya sami karbuwa tare da tausayawa daga Faransawa, Rashawa, Prussians, da Sardinians, daular Austrian ta ki amincewa da shi, kuma Birtaniya da Ottomans suka yi watsi da shi. .Tattaunawar ta yi daidai da yarjejeniya kan wata 'yar karamar kungiya, wacce za a fi sani da United Principalities na Moldavia da Wallachia amma tare da cibiyoyi da kujeru daban-daban kuma tare da kowace hukuma ta zabi yarima nata.Haka kuma taron ya bayyana cewa, sojojin za su ajiye tsofaffin tutocinsu, tare da sanya wa kowannen su shudin shudi.Duk da haka, zaɓen Moldavia da Wallachian na divans na ad-hoc a shekara ta 1859 sun sami fa'ida daga rashin fahimta a cikin rubutun yarjejeniyar ƙarshe, wanda, yayin da aka ayyana kujeru biyu daban-daban, bai hana mutum ɗaya ya mallaki kujerun biyu a lokaci ɗaya ba kuma a ƙarshe ya shigar da shi. Hukuncin Alexandru Ioan Cuza a matsayin Domnitor (Yarima mai Mulki) a kan Moldavia da Wallachia daga 1859 zuwa gaba, tare da haɗin kan manyan hukumomin biyu.^[75]Alexander Ioan Cuza ya gudanar da gyare-gyaren da suka hada da kawar da bautar gumaka tare da fara hada kan cibiyoyin daya bayan daya duk da taron da aka yi daga birnin Paris.Tare da taimakon ƴan ƙungiyar, ya haɗa gwamnati da majalisar dokoki, tare da haɗa Wallachia da Moldavia yadda ya kamata zuwa ƙasa ɗaya kuma a cikin 1862 an canza sunan ƙasar zuwa United Principalities na Romania.