Wallachian uprising of 1821

The uprising of 1821 was a social and political rebellion in Wallachia, which was at the time a tributary state of the Ottoman Empire. It originated as a movement against the Phanariote administration, with backing from the more conservative boyars, but mutated into an attempted removal of the boyar class.

Source: Wikipedia — Wallachian uprising of 1821 (CC BY-SA 4.0)