Although the treaties signed by the Catholic Monarchs with Boabdil for the surrender of Granada stated that the different languages, religions and customs would be respected, after a few years it became clear that this was not happening in practice, and Cardinal Cisneros insisted that everyone, regardless of their religion, be baptised.
The inquisitors had never been happy with these treaties which they believed slowed down their attempts to reduce the Muslim population and the practice of Islam in Spain. They also thought a Muslim revolt was imminent and that it was useless to expect peaceful conversion to Christianity. Cardinal Jimenez de Cisneros therefore asked Isabel and Fernando for permission to continue his inquisition activities and they agreed. Consequently, on 18th December 1499, some three thousand Moors were baptised, a major mosque in Granada was converted to a church and the burning of supposed religious books and documents began.
This understandably led to revolts and protests with a lot of unrest among those who had been forced to convert to Christianity, and a series of mutinies followed, culminating in the 1680 revolt which was finally put down. The most determined rebels fled to the Alpujarras where there was a violent uprising several years later.
Although promises were made that the treaties would be honoured, this did not happen and Cisneros announced that those Moors who refused to be baptised would be expelled. These baptisms were carried out en masse and at an incredible speed – so fast in fact that there was no time for religious instruction to be given to the new “converts”. It has been estimated that between 50,000 and 70,000 Muslims were forcibly baptised in this way in Granada. The offer of emigration to Africa was really only a hollow promise and only available for those who were able to pay and who had not already been baptised.
Queen Juana ("La Loca")
After the Catholic Monarchs died, things got progressively worse: Queen Juana forbade the Moriscos to wear their national dress, and Carlos V introduced a theological council in 1526 which attempted to reform them. These rules were not rigidly imposed and people were able to avoid them by paying certain taxes.
King Felipe II
That all changed, however, with Felipe II who prohibited the use of Moorish dress, language and customs. As a result, there was a violent uprising on 24th December 1568. It began in the Albaicín and continued on into the Alpujarras with the Morisco Aben-Humeya being proclaimed king. Reinforcements were sent from Africa and the revolt extended to the rest of the province of Granada. Churches were burnt, villages ransacked and Christians were murdered. Following the death of Aben-Humeya, the uprising was eventually squashed in 1571. The rebels were then expelled from the kingdom and it was subsequently repopulated by Spaniards from other parts of the country.