sentences:  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.Christianity reached Karnataka in the 16th century with the arrival of the Portuguese and St. Francis Xavier in 1545.Today, Islam and Christianity have a sizable following in Karnataka and have contributed to the cultural cosmopolitanism of the state.