
The Iberian Wedding, also known as the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon, resulting in the entire peninsula coming under Habsburg rule. In the context of the game Europa Universalis IV, the Iberian Wedding is an event that can occur when certain conditions are met. These conditions include the independence and adjacency of Castile and Aragon, specific provincial requirements, and the absence of war between the two kingdoms. While the rulers of the kingdoms must be of different genders, there is no requirement for them to be from the same dynasty.
| Characteristics | Values |
|---|---|
| Requirement for the Iberian Wedding | Castile and Aragon must be independent nations with different rulers |
| Number of provinces | Castile requires 25 provinces, Aragon requires 16 provinces |
| War status | Castile and Aragon must not be at war with each other |
| Time period | The year must be between 1450 and 1530 |
| Rulers | Must be of different genders or have 1 regency |
| Leading partner | Castile is usually the leading partner |
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What You'll Learn

The Iberian Wedding is a historic dynastic union between the kingdoms of Spain and Aragon
The Iberian Wedding, also known as the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon, which brought the entire Iberian peninsula under Habsburg rule. The union began after the Portuguese succession crisis of 1580 and the ensuing War of the Portuguese Succession, and lasted until the Portuguese Restoration War in 1640. During this time, the Kingdom of Portugal, the Crown of Castile, and the states of the Crown of Aragon remained independent states, sharing only a single monarch.
The unification of the peninsula had long been a goal of the region's monarchs, with many attempts to unite the different kingdoms through a policy of intermarriage. The Iberian Wedding could be triggered when certain conditions were met. Both Castile and Aragon must be independent, with Castile requiring 25 provinces and Aragon requiring 16. They must be neighbours, and the year must be between 1450 and 1530. Additionally, the rulers of Castile and Aragon must be of different genders, or one nation must have a regency council due to the ruler being too young.
The Iberian Wedding could also happen if Aragon was being played by a human player and not controlled by AI. If the option to bind the dynasties together was chosen, Castile would always be the leading partner. This union would result in large opinion bonuses towards each other and a reduced liberty desire effect to prevent uprisings. However, it could also lead to uprisings by noble rebels and negatively impact relations with countries that had a royal marriage with the junior partner.
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Castile and Aragon must be independent and neighbours
The Iberian Wedding, also known as the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon, resulting in the entire Iberian peninsula coming under Habsburg rule. This event can be triggered in the game Europa Universalis IV when certain conditions are met. One of the most important requirements for the kingdoms of Castile and Aragon is that they must be independent and not the subject of another nation. This independence is crucial, as it allows for the potential formation of a Personal Union between the two kingdoms.
In addition to independence, Castile and Aragon must also be neighbouring countries. This proximity further emphasises the importance of their independent status, as it enables the potential for a diplomatic union. Furthermore, the year in the game must be between 1450 and 1530, and the kingdoms must not be at war with each other. There are also specific requirements for the number of provinces controlled by each kingdom. Castile requires 25 provinces to trigger the event, while Aragon needs 16.
Once these conditions are met, there are two trigger conditions for the event to occur. The rulers of Castile and Aragon must be of different genders, or the AI-controlled nation must have a regency council. The player then has two options: they can choose to bind their dynasty to the other kingdom's or marry a local talent. If the player chooses the first option, they will become the leader of a union with the other kingdom. This option is usually more desirable as it forms a Personal Union with the other nation.
The Iberian Wedding can even happen if the player is not playing as Castile or Aragon. In this case, Castile will always be the leading partner if the dynasties are bound together. To solidify this union, Castile and Aragon will receive very large opinion bonuses towards each other, which will decay slowly over time. However, there are some minor risks associated with this decision, such as the rise of Noble Rebels in a random province and an instant negative opinion effect from any country that had a Royal Marriage with the junior partner.
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Castile requires 25 provinces, Aragon requires 16
The Iberian Wedding, or the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon, which led to the entire Iberian peninsula coming under Habsburg rule. The event can be triggered in the game Europa Universalis IV when certain conditions are met. One of the requirements for triggering the Iberian Wedding is that both Castile and Aragon must have a certain number of provinces. Specifically, Castile requires 25 provinces, while Aragon needs 16 provinces.
The Iberian Wedding can occur even if the player is not controlling Castile or Aragon. In such cases, Castile will be the leading partner if the dynasties are bound together. This dynastic marriage results in significant opinion bonuses between Castile and Aragon, which decay slowly over time. Additionally, the junior partner in the union benefits from a reduced liberty desire effect, making it easier to manage potential uprisings.
To trigger the Iberian Wedding, several other conditions must be satisfied. Firstly, both Castile and Aragon must be independent nations, not subject to the control of another country. Secondly, the two kingdoms must be neighbours, and they must not be at war with each other. However, they can be engaged in separate conflicts with other nations. The year in the game must also be between 1450 and 1530 for the event to be triggered.
Furthermore, the rulers of Castile and Aragon must be of different genders, or one of the nations must have a regency council due to a ruler being too young. Once these conditions are met, the event has a stacking chance of occurring, becoming more likely over time. While players can attempt to influence the outcome by abdicating the throne or disinheriting heirs, these actions do not guarantee success and carry inherent risks.
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The year must be between 1450 and 1530
The Iberian Wedding, also known as the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon. This union brought the entire Iberian peninsula under Habsburg rule. The wedding was a political unification between Isabella of Castile and Ferdinand of Aragon.
In the game Europa Universalis IV, the Iberian Wedding is an event that can occur for the nation of Castile when certain requirements are met. It can also happen for Aragon, but only if a player is playing as Aragon and not controlled by an AI. The year must be between 1450 and 1530 for the event to be triggered.
Other conditions include Castile and Aragon being independent nations, having a certain number of provinces, and not being at war with each other. Additionally, the rulers of Castile and Aragon must be of different genders, or one of the nations must have a regency council.
The event has two outcomes: the first is the formation of a Personal Union, and the second is a minor outcome where a local talent is married instead. The formation of a Personal Union is generally preferred as it grants significant opinion bonuses and helps prevent uprisings.
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The rulers of Castile and Aragon must be of different genders
The Iberian Wedding, also known as the Iberian Union, was a historic dynastic union between the kingdoms of Spain and Aragon. This union saw the entire Iberian peninsula come under Habsburg rule.
In the game Europa Universalis IV, the Iberian Wedding is an event that can happen for the nation of Castile when certain requirements are met. It can also occur for Aragon, but only if a player is playing as Aragon and the nation is not controlled by an AI. When the event is triggered, the player receives two options. The first option is to form a Personal Union with the other nation. If a player is playing as Castile, they will become the leader of a union with Aragon. If a player is playing as Aragon, they will become the leader in a union with Castile.
For the event to be triggered, Castile and Aragon must be independent nations, have a certain number of provinces, not be at war with each other, and the year must be between 1450 and 1530. Once these conditions are met, there are two additional trigger conditions for the event to occur: the rulers of Castile and Aragon must be of different genders, or one of the nations must have a regency council.
The requirement for the rulers of Castile and Aragon to be of different genders adds an element of unpredictability to the game, as it depends on the random generation of rulers. However, players can influence the likelihood of the event by trying to get a female ruler or heir early in the game. This can be achieved by disinheriting undesirable heirs or using them in combat, hoping they perish. Players can also try to trigger a regency by having a queen in charge while there is an underage heir.
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Frequently asked questions
Yes, they must be independent and not subjects of another nation.
Yes, Castile requires 25 provinces, and Aragon requires 16 provinces.
Yes, they must be neighbours.
Yes, the rulers must be of different genders.
No, they do not need to be of the same dynasty.
























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