During his rule of Serbia, which lasted virtually from 1817 till 1839, Prince Miloš did a very great deal for the welfare of his country. He emancipated the Serbian Church from the trammels of the Greek Patriarchate of Constantinople in 1831, from which date onwards it was ruled by a Metropolitan of Serb nationality, resident at Belgrade. He encouraged the trade of the country, a great deal of which he held in his own hands; he was in fact a sort of prototype of those modern Balkan business-kings of whom King George of Greece and King Carol of Rumania were the most notable examples. He raised an army and put it on a permanent footing, and organized the construction of roads, schools, and churches. He was, however, an autocratic ruler of the old school, and he had no inclination to share the power for the attainment of which he had laboured so many years and gone through so much. From his definite installation as hereditary prince discontent at his arbitrary methods of government amongst his ex-equals increased, and after several revolts he was forced eventually to grant a constitution in 1835. This, however, remained a dead letter, and things went on as before. Later in the same year he paid a prolonged visit to his suzerain at Constantinople, and while he was there the situation in Serbia became still more serious. After his return he was, after several years of delay and of growing unpopularity, compelled to agree to another constitution which was forced on him, paradoxically enough, by the joint efforts of the Tsar and of the Sultan, who seemed to take an unnatural pleasure in supporting the democratic Serbians against their successful colleague in autocracy, who had done so much for his turbulent subjects. Serbia even in those days was essentially and uncompromisingly democratic, but even so Miloš obstinately refused to carry out the provisions of the constitution or in any way to submit to a curtailment of his power, and in 1839 he left his ungrateful principality and took refuge in Rumania, where he possessed an estate, abdicating in favour of his elder son Milan. This Prince Milan, known as Obrenović II, was seriously ill at the time of his accession, and died within a month of it. He was succeeded by his younger brother Michael, known as Obrenović III, who was then only sixteen years of age. This prince, though young, had a good head on his shoulders, and eventually proved the most gifted ruler modern Serbia has ever had. His first reign (1840-2), however, did not open well. He inaugurated it by paying a state visit to Constantinople, but the Sultan only recognized him as elective prince and insisted on his having two advisers approved and appointed by the Porte. Michael on his return showed his determination to have nothing to do with them, but this led to a rebellion headed by one of them, Vučić, and, though Michael’s rule was not as arbitrary as his father’s, he had to bow to the popular will