sentences:  By orders of the king in 1553 and 1578, large areas of Croatia and Slavonia adjacent to the Ottoman Empire were carved out into the Military Frontier ("Vojna krajina" or "Vojna granica") and ruled directly from Vienna's military headquarters.Due to the dangerous proximity to the Ottoman armies, the area became rather deserted, so Austria encouraged the settlement of Serbs, Germans, Hungarians, Czechs, Slovaks and Rusyns/Ukrainians and other Slavs in the Military Frontier, creating an ethnic patchwork.The negative effects of feudalism escalated in 1573 when the peasants in northern Croatia and Slovenia rebelled against their feudal lords over various injustices such as unreasonable taxation or abuse of women in the Croatian and Slovenian peasant revolt.