The Sunnis and Shia disagreed about who was to be

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Though the two main sects within Islam, Sunni and Shia, agree on most of the fundamental beliefs and practices of Islam, a bitter split between the two goes back some 14 centuries. The divide originated with a dispute over who should succeed the Prophet Muhammad as leader of the Islamic faith he introduced

Between 10% and 13% are Shia Muslims, and 87% to 90% are Sunni Muslims. Sunni Muslims are also present in more countries and regions throughout the world, whereas most of Shia Muslims live in four countries: Iran, Pakistan, India, and Iraq

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who should succeed the Prophet Muhammad as leader of the Islamic faith he introduced.

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