Revolutions of 1848 in the Austrian Empire left-right spectrum. Outside the Assembly, petitions, newspapers, mass demonstrations, and political clubs put pressure on their new governments and often expressed violently many of the debates that were occurring within the assembly itself. The Czechs held a Pan-Slavic congress in Prague between June 2 and June 12, 1848. It was primarily composed of Austroslavs who wanted greater freedom within the Empire, but their status as peasants and proletarians surrounded by a German middle class doomed their autonomy . They also disliked the prospect of annexation of Bohemia to a German Empire. Insurgents quickly lost in street fighting to King Ferdinand's
Revolutions of 1848 in the Austrian Empire support Croatian forces under Jelačić. After Vienna was recaptured by imperial forces, General Windischgrätz and 70,000 troops were sent to Hungary to crush the Hungarian revolution and as they advanced the Hungarian government evacuated Pest. However the Austrian army had to retreat after heavy defeats in the Spring Campaign of the Hungarian Army from March to May 1849. Instead of pursuing the Austrian army, the Hungarians stopped to retake the Fort of Buda and prepared defenses. In June 1849 Russian and Austrian troops entered Hungary heavily outnumbering the Hungarian army. Kossuth abdicated on August 11, 1849 in favour of Artúr