seats). The main seat was Udvarhely seat, which was also called the Principal seat () At Székelyudvarhely (Odorheiu Secuiesc) were held many national assemblies of the Székelys A known exception is the 1554 assembly, which took place at Marosvásárhely (Târgu Mureș) Modern era Due to the Ottoman conquest Transylvania became a semi-independent polity. From the end of the 17th century, Transylvania became part of the Habsburg monarchy (later Austrian Empire), and governed by imperial governors. In 1867, as a result of the Austro-Hungarian Compromise, Transylvania become an integral part of the Kingdom of Hungary, within Austria-Hungary, without taking into account the opinion of the majority population, the Romanian one which was 5 times higher. In 1876, a general administrative reform abolished all the autonomous areas in the Kingdom of Hungary and created a unified system of counties. As a result, the autonomy of the Székely Land came to an end as well. Four counties were created in its place: Udvarhely, Háromszék, Csík, and Maros-Torda. (Only half of the territory of Maros-Torda originally belonged to the Székely Land.) The isolated Aranyosszék became a district of Torda-Aranyos county. In December 1918, in the wake of the First World War, Romanian delegates from throughout Transylvania voted to join the Kingdom of Romania. There was an attempt in Udvarhely to found a "Székely republic" on 9 January 1919; however, its creation was unsuccessful. In 1920, by the Treaty of Trianon, Transylvania along with further territories was officially ceded to the Kingdom of Romania. The Romanian language officially replaced Hungarian in the Székely Land, but Székely county boundaries were preserved, and Székely districts were able to elect their own officials at local level and to preserve Hungarian-language education. After 1930, the Romanian authorities began to Romanianize the Hungarian population of the Székely Land, with the presence of minorities in political life being repressed. The election of Hungarians was consistently nullified. The place-names were subjected to Romanianization. The minority languages were excised from official life and the local authorities were mostly led by appointed ethnic Romanians. In 1940, as a result of the Second Vienna Award, Northern Transylvania became part of Hungary again; this territory included most of the historical Székely areas. Hungarian authorities subsequently restored the pre-Trianon structure with slight modifications. Ion Gigurtu's antisemitic laws, the Romanian version of Nuremberg Laws, were replaced by Hungarian ones. The Jews of the Székely Land were subjected to