The Romanian revolution in 1848 already carried the seeds of the national dream of a unified and united Romania, though the "idea of unification" had been known from earlier works of Naum Ramniceanu (1802) and Ion Budai-Deleanu (1804). The concept owes its life to Dumitru Brătianu, who introduced the term "Greater Romania" in 1852. The first step in unifying Romanians was to establish The United Principalities of Moldavia and Wallachia in 1859, which became known as Romania since the 1866 Constitution and turned into a Kingdom in 1881, after gaining independence from the Ottoman Empire. However, before the Austro-Hungarian Compromise, the elite of the Transylvanian Romanians did not support the concept of "Greater Romania", instead they wanted only equality with the other nations in Transylvania. The concept became a political reality when, in 1881, the Romanian National Party of Transylvania gathered Romanians on a common political platform to fight together for Transylvania's autonomy. According to Livezeanu the creation of Greater Romania with "a unifying concept of nationhood" started to evolve in the late 1910s. World War One played a crucial part in the development of Romanian national consciousness.