1150 ⟶ Marriage of Ramon Berenguer IV and Queen Petronilla: Formation of the Crown of Aragon
Ramon Berenguer IV, Count of Barcelona marries Petronilla, t...Year
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💍 Marriage of Ramon Berenguer IV and Queen Petronilla: Formation of the Crown of Aragon
Ramon Berenguer IV, Count of Barcelona marries Petronilla, the Queen of Aragon.⟶

Dynastic MarriageMonarchyPolitical UnionCrown of Aragon

📜 Treaty of Tudilén: Division of Reconquista Zones
The Treaty of Tudilén is signed by Alfonso VII of León and Raymond Berengar IV, Count of Barcelona, recognizing the Aragonese conquests south of the Júcar and the right to expand in and annex the Kingdom of Murcia.⟶

Medieval SpainReconquistaTreatyPolitical AgreementTerritorial ExpansionKingdom of LeónCrown of Aragon

🤝 Treaty of Sahagún: Castile and Aragon Forge Alliance
The Treaty of Sahagún is signed by Alfonso VIII of Castile and Alfonso II of Aragon. Based on the terms of the accord, Alfonso VIII agrees to provide Alfonso II with three hostages, to be used as tribute payments owed by Ibn Mardanīš of Valencia and Murcia.⟶

TreatyDiplomacyMiddle AgesKingdom of CastileTributePolitical Alliances

💍 Marriage Unites Aragon and Castile, Forging Spain
The marriage of Ferdinand II of Aragon and Isabella I of Castile leads to the unification of Spain.The renaissance king Matthias Corvinus of Hungary. His mercenary standing army (the Black Army) had the strongest military potential of its era.⟶

MarriageUnificationMonarchyPolitical ConsolidationIsabella I of CastileFerdinand II of AragonState Formation

👑 Juan Carlos I Ascends to the Spanish Throne
November 22: Juan Carlos I becomes King of Spain.⟶

MonarchyPolitical TransitionConstitutional Monarchy
