WI No Kingdom of Spain

In 1479, the dynastic titles of the Crown of Aragon and the Crown of Castille merged, creating what would eventually become known as the Kingdom of Spain.

WI the Crown of Aragon never merged dynasties with Castille?

Admittedly, I don't know much about medieval Spanish politics. However, I'm interested in seeing how things would progress in Europe with a divided Spain. Would Castille attempt to militarily overthrow Aragon, or vice versa? How would the European Protestant nations progress without the Spanish, Catholic bogeyman? What about the discovery of the Americas?
 
To do this, it would mean that Ferdinand and Isabella could not marry. That way Castile and Aragon would not unite. Assuming that Miguel da Paz dies in 1500 as in OTL, the three kingdoms would stay separated. If there is a treaty of Torsedillas, maybe there would be three nations dividing up the world, not two.
 
In 1479, the dynastic titles of the Crown of Aragon and the Crown of Castille merged, creating what would eventually become known as the Kingdom of Spain.

WI the Crown of Aragon never merged dynasties with Castille?

Admittedly, I don't know much about medieval Spanish politics. However, I'm interested in seeing how things would progress in Europe with a divided Spain. Would Castille attempt to militarily overthrow Aragon, or vice versa? How would the European Protestant nations progress without the Spanish, Catholic bogeyman? What about the discovery of the Americas?

I think the best chance for this happen is if you have a victory of Juana La Beltraneja in the War of the Castilian Succession. Isabella would only be the wife of the king of Aragon, while Juana would be the Queen of Castille. It means that her consort would be the king of Portugal, Afonso V. However, Afonso already had two children (princess Joana and the future John II of Portugal), so any children from his marriage with Juana would be heir of Castille and nothing more.

Now, without the Catholic Monarchs probably the institution of the Inquisition in Castille would be delayed or (with some luck) never stablished, and the Castilian Jews could have survived (if there were a firm Jewish support to Juana in the war against Isabella she might be thankful enough to defend them). Granada I think was already doomed, it was a matter of time, but it might have some more years of survival.

But Aragon would be interesting. Without Castilian resources Aragon would probably not have the same success in holding her Italian territories. Ferdinand would be alone to fight France, and would be desperated for an ally. Castille would be impossible, and Portugal would be an ally of Castille in this situation. So, Ferdinand would probably look at the Habsburgs. So there would be an anti-France alliance between the Habsburgs and Aragon, with some probable dinastic consequences too.
 
This is actually kind of hard. There was a concerted effort in this time period to unite the Iberian peninsula. If F&I fail at it someone else will try.
 
This is actually kind of hard. There was a concerted effort in this time period to unite the Iberian peninsula. If F&I fail at it someone else will try.

Yes, there was. But if all the three kingdoms have male heirs, these heirs would not give up their lands just for 'Iberian cooperation".;) Remember, IOTL Miguel da Paz only become heir of the three kindgoms because Juan of Castille died before, and even Castille only united with Aragon because Henry IV had no male heir.
 
Actually, you could still pull off a POD after the marriage of the Catholic Kings. After the death of Isabella, Ferdinand quarreled with--and possibly even later poisoned, if you believe the rumors--his son-in-law, Philip the Handsome. He took Germaine de Foix as his second wife soon after with two very clear purposes: to gain the Navarrese throne, and also, perhaps more importantly, to secure the separation of the Aragonese inheritance by producing a male heir, mostly just to spite Emperor Maximilian and Philip. Ferdinand was very set on this and it influenced his policies from that point onward, such as his betrayal of the League of Cambrai (and thus Emperor Maximilian), etc.
He did manage to get a son out of Germaine, but the boy died soon after birth (in 1509, I believe). His survival may be a very good POD.
 
Actually, you could still pull off a POD after the marriage of the Catholic Kings. After the death of Isabella, Ferdinand quarreled with--and possibly even later poisoned, if you believe the rumors--his son-in-law, Philip the Handsome. He took Germaine de Foix as his second wife soon after with two very clear purposes: to gain the Navarrese throne, and also, perhaps more importantly, to secure the separation of the Aragonese inheritance by producing a male heir, mostly just to spite Emperor Maximilian and Philip. Ferdinand was very set on this and it influenced his policies from that point onward, such as his betrayal of the League of Cambrai (and thus Emperor Maximilian), etc.
He did manage to get a son out of Germaine, but the boy died soon after birth (in 1509, I believe). His survival may be a very good POD.

True, I forgot the marriage between Ferdinand and Germaine. But also in this case, even if the Italian territories are more secured in Aragonese hands the son of Ferdinand (or his regent) would still need to face French opposition. However, in this case Castille would be probably an Aragonese ally against France.
 
If there is no Kingdom of Spain (Reino de España en Español), the scenario would be, Protestant Reformation will extend to Spain and the result is 20% of the Spaniards would be Protestants because there is no Kingdom of Spain (Castile and Aragón doesn't unite) and there would be no inquisition.
 
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