The idea of a national cathedral first emerged following the Romanian War of Independence (1877–1878), which was mainly fought between the Russian and Ottoman Empires. The church was to symbolise the victory of Orthodox Christians over the Ottoman Muslims. The idea was shelved for lack of consensus on design, location and funding. The Unification of the Romanian Principalities in 1859, entailed a unitary organisation of church structures in Moldavia and Wallachia within the Holy Synod (1872), thus the assembly of hierarchs increased to 12 members, including: the Primate Metropolitan (chairman), the Metropolitan of Moldavia and their suffragan bishops of Râmnic, Buzău, Argeș, Roman, Huși and Lower Danube (Galați) and one auxiliary vicar-bishop for every diocese. The old Metropolitan Cathedral had proved overcrowded, especially during the national holidays, such as the Proclamation of the Kingdom of Romania and the crowning of King Carol I of Romania (10 May 1881), when none of the over one hundred churches in Bucharest was able to receive those who would have wanted to participate in the official service. Therefore, at King Carol I's desire, Romania's Assembly of Deputies and the Senate voted in favour of the Law no. 1750 on the construction of the Cathedral Church in Bucharest, promulgated by King Carol I on 5 June 1884.