WI: No Treaty of Tordesillas?

The Treaty of Tordesillas was designed to settle the dispute between Portugal and Spain over which nation got what in its conquests of the world in 1494 between Ferdinand II of Aragon, Isabella I of Castille, John II of Portugal and John, Prince of Asturias, respectively. (This treaty would also bar other nations mind you, leaving the early colonising solely to the Spanish and Portuguese).

But, what if there was no Treaty? What might the consequences have been if the signatories did not sign such a deal between themselves?
 
Well, everyone outside the Peninsula will have one less Treaty to ignore.

But if Portugal and Castile don't sign the Tordesillas they'll have to reach some kind of other settlement or else there will be war. The islands that Columbus found were in the Portuguese area according to the previous Treaty of Alcáçovas.
 
Well, everyone outside the Peninsula will have one less Treaty to ignore.

But if Portugal and Castile don't sign the Tordesillas they'll have to reach some kind of other settlement or else there will be war. The islands that Columbus found were in the Portuguese area according to the previous Treaty of Alcáçovas.

Do you think that the Kingdom of Castille would have gone to war with John II had there been no form of agreement? (Self-admittedly, I am somewhat lacking in knowledge and am open to all kinds of knowledge)
 
Do you think that the Kingdom of Castille would have gone to war with John II had there been no form of agreement? (Self-admittedly, I am somewhat lacking in knowledge and am open to all kinds of knowledge)
With broken negotiations and continuing Castilian expeditions to the Caribbean, the Portuguese would not sit idly by. At the very least they'd prepare their own westward expeditions to take possession of the lands and to capture any Castilian ship they see.
 
With broken negotiations and continuing Castilian expeditions to the Caribbean, the Portuguese would not sit idly by. At the very least they'd prepare their own westward expeditions to take possession of the lands and to capture any Castilian ship they see.

... and risk an open war in the peninsula? They would reach an agreement, there would be an alt-Tordesillas treaty.
 
... and risk an open war in the peninsula? They would reach an agreement, there would be an alt-Tordesillas treaty.

Specially because there had been already a war between Castille and Portugal not even 20 years earlier, and at the time of Tordesillas Castille was in a much stronger position. Nobody wanted a war between the two countries, and diplomacy was the only option.
 
... and risk an open war in the peninsula?
That is why IOTL João II didn't just say "No, no, no! We had already agreed about this: back the fuck off!"

They would reach an agreement, there would be an alt-Tordesillas treaty.
Yes, an alternative settlement is the likeliest.

If Castilians are however hostile enough to just ignore Portuguese claims and not enter into negotiations, the Portuguese would do what they always did IOTL whenever a Castilian ship entered their turf.
 
Actually the Treaty was not so much about existing colonial territories,but about spheres of influence dividing the globe between them and using as bordeline a geographical parallel;for example Japan fell under the Portuguese
sphere of influence and as everyone knows,Japan was totally independent...
 
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