The Kingdom of Castile is a historical realm located in the Iberian Peninsula, specifically the central and northern regions of what is now modern-day Spain. It was formed through the union of several smaller Christian kingdoms and counties during the 11th and 12th centuries. The dominant power within the larger Kingdom of Castile was the County of Castile, which encompassed the territories around the current provinces of Burgos, Palencia, Segovia, Soria, and Valladolid.
Throughout its existence, the Kingdom of Castile played a significant role in the history of Spain and the broader European context. It became an important political and cultural center, boasting great cities like Burgos, Toledo, and eventually Madrid. Castile was characterized by its continuous expansion through successful military campaigns, notably the Reconquista, a centuries-long process of Christian kingdoms pushing back and eventually re-conquering territories from the Islamic Moors.
The Kingdom of Castile was also associated with the great Spanish monarchs, such as Ferdinand and Isabella, who united the crowns of Castile and Aragon through their marriage. Their reign marked an important turning point in the history of Spain and the world, as they supported Christopher Columbus's voyages that led to the discovery of the Americas.
In summary, the Kingdom of Castile refers to a historical political entity that emerged as a dominant power in medieval Spain, characterized by its territorial expansion and cultural significance throughout the Iberian Peninsula and beyond.
