invasion from the Ottoman Empire from the 15th century until the year 1912. Many Albanians embraced Islam in different ways. Albania differs from other regions in the Balkans in that the peak of Islamization in Albania occurred much later: 16th century Ottoman census data showed that sanjaks where Albanians lived remained overwhelmingly Christian with Muslims making up no more than 5% in most areas (Ohrid 1.9%, Shkodra 4.5%, Elbasan 5.5%, Vlora 1.8%, Dukagjin 0%) while during this period Muslims had already risen to large proportions in Bosnia (Bosnia 46%, Herzegovina 43%, urban Sarajevo 100%), Northern Greece (Trikala 17.5%), North Macedonia (Skopje and Bitola both at 75%) and Eastern Bulgaria (Silistra 72%, Chirmen 88%, Nikopol 22%). Later on, in the 19th century, when the process of Islamization had halted in most of the Balkans and some Balkan Christian peoples like Greeks and Serbs had already claimed independence, Islamization continued to make significant progress in Albania, especially in the South. As a rule, Ottoman rule largely tolerated Christian subjects but it also discriminated against them, turning them into second-class citizens with much higher taxes and various legal restrictions like being unable to take Muslims to court, have horses, have weapons, or have houses overlooking those of Muslims. While Catholicism was chronically held in suspicion by Ottoman authorities, after the conquest of Constantinople, the Ottomans largely allowed the Orthodox church to function unhindered, except during periods when the church was considered politically suspect and thus suppressed with expulsions of bishops and seizure of property and revenues. Conversion during Ottoman times was variously due to calculated attempts to improve social and economic status, due to the successful proselytizing by missionaries, or done out of desperation in very difficult times; in the latter case, the converts often practised crypto-Christianity for long periods. During the Ottoman period, most Christians as well as most Muslims employed a degree of syncretism, still practising various pagan rites; many of these rites are best preserved among mystical orders like the Bektashi. Unlike some other areas of the Balkans, such as Bulgaria and Bosnia, for the first couple centuries of Ottoman rule, up until the 1500s, Islam remained confined to members of the co-opted aristocracy and a couple scattered military settlements of Yuruks from Anatolia, while the native Albanian peasantry remained overwhelmingly Christian. Even long after the fall of Skanderbeg, large regions of the Albanian countryside frequently rebelled against Ottoman rule,