Dans Europa Universalis IV, coloniser les îles de départ ibériques en tant que Castille présente un défi concernant l'accès au marché. Après avoir colonisé Funchal dans les îles du Madeira, qui commence au nœud commercial de Séville, la province a affiché 0 % d'accès au marché de Séville. La création d'un nouveau marché centré sur Funchal a permis aux autres îles de s'y joindre, mais elles manquaient toujours d'accès au marché au-delà de Funchal lui-même. Ce problème s'étend également aux Açores, qui n'ont aucun accès au marché de Lisbonne ou au nouveau marché de Funchal, tout en permettant à un marché séparé d'ouvrir le commerce jusqu'à Lübeck, en évitant les régions proches.
Bien que la présence maritime offre des avantages commerciaux, elle ne améliore pas l'accès au marché. Le système actuel pourrait encourager la création de nœuds de marché individuels pour chaque île, mais cette approche semble inefficace et met en lumière des défauts potentiels dans les mécanismes de centre de marché. En dehors du coût, le principal inconvénient de faire de chaque province un marché reste peu clair, soulevant des questions sur la conception globale du système.



To increase market access, you should reduce the distance between markets. You can achieve this by building docks or using the Navy presence button in the military interface. Additionally, pursuing the Naval idea may help.
To increase market access, you need to focus on infrastructure like ports and trade routes, not just maritime presence. Maritime presence mainly provides trade advantage, not market distance.
I’ll check the wiki for any helpful information.
The wiki doesn’t provide much information, but if you can save and load, try releasing that location as a colonial subject. I’m not certain it will work, so I’ll need to check YouTube for more details.
To increase your market access, you don’t need to make every colonized tile a subject. Also, if the market center is the same, why would they have more market access than you?
As a last resort, you could consider that option, though I’m not entirely sure it will help.
As a final attempt to help, it seems that the distance between your capital and the colony affects market access. Having a natural harbor helps, but you can also build wharves and docks.
If that doesn’t help, try constructing a building that provides market capacity to the location, such as a marketplace for towns or another building whose name I can’t recall.
To increase market access, focus on unlocking technologies that expand trade range and maritime presence. Additionally, improving your diplomatic relations will enable you to establish trade offices and overseas trading posts.
To increase market access, you’ll need to focus on other strategies, as those methods don’t contribute to it.
To increase market access, consider creating a new market specifically for the islands in that region. Building a few masons or tool shops nearby can also help them become more self-sufficient.