Islam, which had an early presence in the west coast of India as early as the 10th century gained a foothold in Karnataka with the arrival of the
Bahmani Sultanate and
Adil Shahi dynasty, which ruled parts of Karnataka. Islam arrived in Karnataka and Kerala in the 7th century with Arab merchants trading in spices. Muslims introduced coffee, and the paper industry to the local economy. Following the 12th century, various Islamic armies established sultanates in this area such as the
Bahamani sultanate of Bidar (1347–1510) and the
Adilshahi dynasty of the Bijapur Sultanate (1490–1686). This land came under Mughal rule in the 17th century under Aurangzeb's rule. With the disintegration of Mughal rule, Hyder Ali and his son
Tippu Sultan established their rule over the Mysore area. They violently resisted British rule in the area, but without adequate cooperation from other kingdoms, were defeated. Though killed by the British in 1799,
Tippu Sultan was one of the only Indian leaders to defeat the British in battle, which made him as an iconic leader among the people in the modern era. In addition, the Nizams of Hyderabad ruled over large parts of Northeastern Karnataka. This land only became part of Karnataka after the passing of the 1956
States Reorganisation Act. Muslims form approximately 12.91% of the population of Karnataka. While Muslims can be found in all districts of Karnataka, Muslims have a stronger presence in: 1. Northern Karnataka (especially in the area formerly ruled by the Princely State of Hyderabad) such as Gulbarga, Bidar, Bijapur, Raichur and Dharwad.2. The districts bordering Kerala. 3. The cities of Bangalore, Mysore and Mangalore. In
coastal Karnataka in particular, Muslims form 24% of the population, the double of their overall share in the state, belonging to the
Beary community which is known to be involved in trade and business, having particularly profited from the mass immigration to the Gulf from the '70s onward, owning diverse malls, hospitals, construction and educational institutions in the region. On the other hand, the proportion of Muslims is lower in central Karnataka. ==Christianity==