The Alhambra Decree (also known as the Edict of Expulsion; Spanish: Decreto de la Alhambra, Edicto de Granada) was an edict issued on 31 March 1492, by the joint Catholic Monarchs of Spain (Isabella I of Castile and Ferdinand II of Aragon) ordering the expulsion of practicing Jews from the Kingdoms of Castile and Aragon and its territories and possessions by 31 July of that year. The primary purpose was to eliminate their influence on Spain's large converso population and ensure they did not revert to Judaism. Over half of Spain's Jews had converted as a result of the religious persecution and pogroms which occurred in 1391. Due to continuing attacks around 50,000 more had converted by 1415. A further number of those remaining chose to convert to avoid expulsion. As a result of the Alhambra decree and persecution in prior years, over 200,000 Jews converted to Catholicism and between 40,000 and 100,000 were expelled, an indeterminate number returning to Spain in the years following the expulsion.:17
The edict was formally and symbolically revoked on 16 December 1968, following the Second Vatican Council. This was a full century after Jews had been openly practicing their religion in Spain and synagogues were once more legal places of worship under Spain's Laws of Religious Freedom.
In 1924, the regime of Primo de Rivera granted Spanish citizenship to the entire Sephardic Jewish diaspora. In 2014, the government of Spain passed a law allowing dual citizenship to Jewish descendants who apply, to "compensate for shameful events in the country's past." Thus, Sephardi Jews who can prove they are the descendants of those Jews expelled from Spain because of the Alhambra Decree can "become Spaniards without leaving home or giving up their present nationality."
By the end of the 8th century, Muslim forces had conquered and settled most of the Iberian Peninsula. Under Islamic law, the Jews who had lived in the region since at least Roman times, were considered "People of the Book," which was a protected status. Compared to the repressive policies of the Visigothic kingdom, who, starting in the sixth-century had enacted a series of anti-Jewish statutes which culminated in their forced conversion and enslavement, the tolerance of the Muslim Moorish rulers of al-Andalus allowed Jewish communities to thrive. Jewish merchants were able to trade freely across the Islamic world, which allowed them to flourish, and made Jewish enclaves in Muslim Iberian cities great centers of learning and commerce. This led to a flowering of Jewish culture, as Jewish scholars were able to gain favor in Muslim courts as skilled physicians, diplomats, translators, and poets. Although Jews never enjoyed equal status to Muslims, in some Taifas, such as Granada, Jewish men were appointed to very high offices, including Grand Vizier. However, Muslim forces did not control the entire peninsula.