Al Andalus was the Muslim-ruled area of Iberia from 711-1492 CE. It started as a dependent emirate before becoming an independent emirate and later a caliphate based in Cordoba. The caliphate disintegrated into rival taifa kingdoms in the 11th century before the Almoravids and later Almohads unified the region again. Eventually the Nasrid Kingdom of Granada was established, lasting until 1492 when it fell to the Catholic Monarchs and became part of Christian Spain.