John II of Castile implemented domestic policies focused on consolidating power and asserting royal authority within the kingdom.

John II, the King of Castile, understood the importance of garnering support from influential noble families within his realm.

John II's handling of relations with the Crown of Aragon reflects his diplomatic acumen and commitment to preserving peace and stability

King John II demonstrated acute awareness of the significance of alliances in maintaining and expanding his kingdom's influence.

John II known as "The Great" was a master of navigating intricate political landscapes during his reign over the Kingdom of Castile.