of overseeing of the Principalities was left to Russian general Pavel Kiselyov; this period was marked by a series of major changes, including the reestablishment of a Wallachian Army (1831), a tax reform (which nonetheless confirmed tax exemptions for the privileged), as well as major urban works in Bucharest and other cities. In 1834, Wallachia's throne was occupied by Alexandru II Ghica—a move in contradiction with the Adrianople treaty, as he had not been elected by the new Legislative Assembly; he was removed by the suzerains in 1842 and replaced with an elected prince, Gheorghe Bibescu. 1840s–1850s Opposition to Ghica's arbitrary and highly conservative rule, together with the rise of liberal and radical currents, was first felt with the protests voiced by Ion Câmpineanu (quickly repressed); subsequently, it became increasingly conspiratorial, and centered on those secret societies created by young officers such as Nicolae Bălcescu and Mitică Filipescu. Frăția, a clandestine movement created in 1843, began planning a revolution to overthrow Bibescu and repeal Regulamentul Organic in 1848 (inspired by the European rebellions of the same year). Their pan-Wallachian coup d'état was initially successful only near Turnu Măgurele, where crowds cheered the Islaz Proclamation (9 June); among others, the document called for political freedoms, independence, land reform, and the creation of a national guard. On 11–12 June the movement was successful in deposing Bibescu and establishing a Provisional Government, which made Dreptate, Frăție ("Justice, Brotherhood") the national motto. Although sympathetic to the anti-Russian goals of the revolution, the Ottomans were pressured by Russia into repressing it: Ottoman troops entered Bucharest on 13 September. Russian and Turkish troops, present until 1851, brought Barbu Dimitrie Știrbei to the throne, during which interval most participants in the revolution were sent into exile. Briefly under renewed Russian occupation during the Crimean War, Wallachia and Moldavia were given a new status with a neutral Austrian administration (1854–1856) and the Treaty of Paris: a tutelage shared by Ottomans and a Congress of Great Powers (Britain, France, the Kingdom of Piedmont-Sardinia, the Austrian Empire, Prussia, and, albeit never again fully, Russia), with a kaymakam-led internal administration. The emerging movement for a union of the Danubian Principalities (a demand first voiced in 1848, and a cause cemented by the return of revolutionary exiles) was advocated by the French and their Sardinian allies, supported by Russia and Prussia, but was rejected or suspicioned by all other overseers. After an