Ottoman suzerainty. After the Ottoman conquest in the Kingdom of Hungary, the ethnic structure of the kingdom started to become more multi-ethnic because of immigration to the sparsely populated areas. Between 1683 and 1717, the Habsburg monarchy conquered all the Ottoman territories that were part of the Kingdom of Hungary before 1526, and incorporated some of these areas into the Habsburg Kingdom of Hungary. After a suppressed uprising in 1848–1849, the Kingdom of Hungary and its diet were dissolved, and territory of the Kingdom of Hungary was divided into 5 districts, which were Pest & Ofen, Ödenburg, Preßburg, Kaschau and Großwardein, directly controlled from Vienna while Croatia, Slavonia, and the Voivodeship of Serbia and Banat of Temeschwar were separated from the Kingdom of Hungary between 1849 and 1860. This new centralized rule, however, failed to provide stability, and in the wake of military defeats the Austrian Empire was transformed into Austria-Hungary with the Austro-Hungarian Compromise of 1867, by which Kingdom of Hungary became one of two constituent entities of the new dual monarchy with self-rule in its internal affairs. A considerable number of the figures who are today considered important in Hungarian culture were born in what are today parts of Romania, Slovakia, Poland, Ukraine, and Austria (see List of Hungarians who were born outside present-day Hungary). Names of Hungarian dishes, common surnames, proverbs, sayings, folk songs etc. also refer to these rich cultural ties. After 1867, the non-Hungarian ethnic groups were subject to assimilation and Magyarization. Among the most notable policies was the promotion of the Hungarian language as the country's official language (replacing Latin and German); however, this was often at the expense of West Slavic languages and the Romanian language. The new government of autonomous Kingdom of Hungary took the stance that Kingdom of Hungary should be a Hungarian nation state, and that all other peoples living in the Kingdom of Hungary—Germans, Jews, Romanians, Slovaks, Poles, Ruthenes and other ethnicities—should be assimilated. (The Croats were to some extent an exception to this, as they had a fair degree of self-government within Croatia-Slavonia, a dependent kingdom within the Kingdom of Hungary.) World War I The peace treaties signed after the First World War redefined the national borders of Europe. The dissolution of Austria-Hungary, after its defeat in the First World War, gave an opportunity for the subject nationalities of the old Monarchy to all form their own nation