 Therefore, it became a centre of the Serbian Revolution, a national awakening of Serbs led by their "vojvoda," Karađorđe.First liberated on 5 April 1804 during the First Serbian Uprising, the city was finally freed from imperial rule during the Second Serbian Uprising in 1815.In 1818, Kragujevac, though largely depopulated following the conflicts of the preceding centuries, was proclaimed capital of the Principality of Serbia on 6 May 1818 by Miloš Obrenović in the medieval Vraćevšnica monastery.