The fall of granada, in 1492, signified the end of the

The last Muslim kingdom of the Iberian Peninsula and the end of the Reconquest period

Explanation:

The war in Granada was the set of military campaigns that took place between 1482 and 1492, undertaken by Queen Elizabeth I of Castile and her husband King Ferdinand II of Aragon inside the Nasrid Kingdom of Granada, which culminated in the Capitulations of Granada of King Boabdil, who had oscillated between the alliance, the double game, the contemporization and the open confrontation with both sides and that had as consequences the integration in the Crown of Castile of the last Muslim kingdom of the Iberian Peninsula ending the historical process of the Reconquest that the Christian kingdoms had begun in the eighth century and by which Pope Alexander VI recognized Isabel and Ferdinand with the title of Catholic Monarchs in 1496.

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.