The topic of this master thesis are the happenings in the Triune Kingdom of Croatia, Slavonia and Dalmatia, starting with the Croatian national revival, passing of the People’s Party declaration Demands of the Nation and finishing with the constitution of the Croatian Parliament (Sabor) in 1848. The Croatian national revival or the Illyrian movement covers the time between Metternich’s and Bach’s absolutism (1790.-1848.). The manifest and the aim of the movement, called The Dissertation, included the implementation of the Croatian language as the official one, opposing the undergoing Magyarization; unity of all regions under the reign of the Ban and the abolishment of feudalism. As part of the Revival, the People’s Party introduced a declaration named Demands of the Nation. In the 30 points of the declaration; national, legal, social, and liberal demands were presented with the aim of improving the position of the Triune Kingdom within the Monarchy and to modernize the outdated social models. The peak of the national-political program of the Revival was the constitution of the Croatian Parliament (Sabor) led by the newly appointed Ban Josip Jelačić. The great relevance of the 1848. Sabor is because for the first time in history part of representatives were chosen based on elections. The rest of representatives were directly named from aristocracy circles; of the Catholic and Orthodox churches and representatives of the Zagreb’s Academy of Science. In the period from 5th to 9th of June 1848. the Sabor adopted 35 conclusions. The achievements of the 1848. Sabor such as unity of regions under the Ban reign, use of the national language in state services were short-term. After the repression of the Hungarian revolution, the new emperor Franz Joseph I brought in place an octroic constitution with neo- absolutism as a cornerstone, but with elements of liberal principles with the aim of strengthening the capitalistic and modern affairs of the Monarchy.