Original: The first decade of Ferdinand and Isabella 's joint rule included the conquest of the Nasrid dynasty of the Emirate of Granada ( Moorish Kingdom of Granada ) , the last Islamic al-Andalus entity on the Iberian peninsula , in 1492 .
Simplified: The first decades of Ferdinand and Isabellas joint rule were taken up with the conquest of the Kingdom of Granada , the last Muslim enclave in the Iberian peninsula .