What significant event in 1492 involved the Spanish pushing Muslims out of Spain?

The significant event in 1492 that involved the Spanish pushing Muslims out of Spain is known as the Reconquista. This was a centuries-long campaign aimed at recapturing territory in the Iberian Peninsula that had been under Muslim control since the early 8th century. The culmination of the Reconquista occurred when the Kingdom of Granada, the last Muslim stronghold in Spain, fell to the Catholic Monarchs, Ferdinand II of Aragon and Isabella I of Castile, in January 1492.

The successful completion of the Reconquista not only marked the end of Muslim rule in Spain but also set the stage for Spain's emergence as a unified Christian kingdom. This event had profound implications for Spanish society, culture, and politics, leading to increased interest in exploration and colonization, which is crystallized in Christopher Columbus's subsequent voyage later that same year. This historical context underscores the significance of the Reconquista in shaping Spain's national identity and its subsequent role in the Age of Exploration.

The other options, while important in their own right, do not pertain to this specific historical moment in 1492.