In January 1831, Prince Miloš informed a great national assembly that he had obtained an imperial edict from the Sultan ending all direct obligations of Serbian peasants to their former Turkish lords, guaranteeing Ottoman recognition of Serbian autonomy in most matters of internal administration, and offering Serbia the prospect of territorial aggrandizement, as well as the express right to institute schools, courts, and a governmental administration of her own. The Sultan's decrees of 1830 and 1833 expanded the same rights to a larger territory, and made Serbia a sovereign principality, with Miloš Obrenović as hereditary prince. A Metropolitanate of Serbia was established in Belgrade as an autonomous unit of the Patriarchate of Constantinople. Russia's status as the guarantor of Serbia's autonomy was also recognized.