The Istrian Provincial (Land) Assembly is the representative body of the Margraviate of Istria that operated in the period from 1861 to 1916. It was established by the administrative-territorial division of the Habsburg Monarchy after the adoption of the October Diploma (1860) and the February Patent (1861). Together with the councils in Gorica and Trieste, it belonged to the Austrian Littoral with the Viceroyalty in Trieste. The Parliament sat in Poreč, Pula and Koper and sent representatives to the Imperial Council in Vienna. After 1867, the Margrave of Istria became part of the Cislaitanian Austrian part of the Monarchy. In its operation over several periods of time, in the period from the second half of the 19th century to the beginning of the 20th century, the Istrian Parliament was a stormy battlefield where two representative groups clashed: the Italian majority, which represented the wealthier minority of the province's population, and the Croatian-Slavic minority which represented the poorer majority of the population in the province. In the 55 years of the work of the Parliament, numerous historical figures participated in its sessions, including Bishop Juraj Dobrila, who is most responsible for the publication of the newspaper Naša sloga, and Matko Laginja on the Croatian-Slovenian side, as well as Gian Paolo Polesini, the first president of the Istrian Parliament, and Francesco Vidulich , the longest-serving president of the Istrian Parliament. Although the Parliament formally functioned until 1916, it stopped sitting in 1910.