The document summarizes key events and developments during the reign of the Catholic Monarchs in Spain, including their domestic and foreign policies. It also discusses the discovery and conquest of America in the late 15th century. Some of the main points covered include: - The Catholic Monarchs subjected the nobility and clergy to royal authority and created a permanent army and common laws across their territories. - They conquered the Kingdom of Granada in 1492 and expelled the Jews, extending the Spanish Inquisition. - Through strategic marriages, they formed alliances with other European powers and expanded Spanish territory in North Africa and the Mediterranean. - They supported expeditions that led to Christopher Columbus' discovery of America in 1492