Bosnia was conquered by the Ottomans in 1463, and a large portion of the population converted to Islam in the first 200 years of Ottoman domination. By the time Austria-Hungary occupied Bosnia in 1878, the Habsburgs had shed the desire to re-Christianize new provinces. As a result, a sizable Muslim population in Bosnia survived into the 20th century. Albania and the Kosovo area remained under Ottoman rule until 1913. Prior to the Ottoman conquest, the northern Albanians were Roman Catholic and the southern Albanians were Christian Orthodox, but by 1913 the majority were Muslim.