Revolutions of 1848 in the Austrian Empire of the Serbs in Austrian Empire was held between 1 and 3 May 1848 in Sremski Karlovci, during which the Serbs proclaimed autonomous Habsburg crownland of Serbian Vojvodina. The war started, leading to clashes as such in Srbobran, where on July 14, 1848, the first siege of the town by Hungarian forces began under Baron Fülöp Berchtold. The army was forced to retreat due to a strong Serbian defense. With war raging on three fronts (against Romanians and Serbs in Banat and Bačka, and Romanians in Transylvania), Hungarian radicals in Pest saw this as an opportunity. Parliament made concessions to
Revolutions of 1848 in the Austrian Empire affairs, he oversaw the creation of the Bach system, which rooted out political dissent and contained liberals within Austria and quickly returned the status quo. After the deportation of Lajos Kossuth, a nationalist Hungarian leader, Schwarzenberg faced uprisings by Hungarians. Playing on the long-standing Russian tradition of conservativism, he convinced tsar Nicholas I to send Russian forces in. The Russian army quickly destroyed the rebellion, forcing the Hungarians back under Austrian control. In less than three years, Schwarzenberg had returned stability and control to Austria. However, Schwarzenberg had a stroke in 1852, and his successors failed to uphold the control