The last Moorish stronghold in Spain, Granada, finally fell to the Catholic forces of King Ferdinand and Queen Isabella after a long and brutal siege. Muhammad XII, also known as Boabdil, the ruler of Granada, surrendered the city, marking the end of Islamic rule in Spain. The Treaty of Granada, signed on this day, allowed for the peaceful transfer of power, but its conditions would soon be broken, leading to the expulsion of Muslims and Jews from the Iberian Peninsula.