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# 附庸国

（重定向自Diplomatic annexation

## 创建附庸国

### 释放附庸国

1. 打开外交菜单界面。如果玩家的国家没有显示,那么点击右下角的菜单中的查看自己的国家。
2. 在右下角弹出的界面选项中,有一个按钮叫“创建附庸”。
3. 如果按钮无法点击是灰色的，那么毫无疑问，要么是没有国家可以释放要么是国家处于战争状态。
4. 点击“创建附庸”按钮并选择国家作为附庸放出。满足以下条件方能备选：
1. 目标国家当前不存在
2. 宗主国控制控制省份有目标国家的核心和同一文化组的文化作为初始文化

Whatever religion is the largest in the new vassal's territories in terms of development will become the vassal's state religion; the number of provinces following any given religion is not the determining factor. If a same-religion vassal is necessary, converting the future vassal's richer provinces before releasing the vassal will ensure the vassal's adherence to the true faith.

The new country will maintain its default assigned tech group but will start with all the technologies its master possesses. The Creek, for example, will always release as North American tech group country with Creek culture equal to its master in technology.

If the released nation's core provinces include the releasing country's capital, the capital will not be released, even if it is in the list of provinces to be released.

When releasing a nation into vassalage, the player may switch to playing as that vassal. When done in ironman mode, this will disable most achievements.

#### 耶路撒冷王国

耶路撒冷王国是释放一个国家作为附庸的一个特例，在于其可被任何除了  圣约翰骑士团 塞浦路斯以外的天主教国家通过决议的方式放出来当附庸，若要通过这两个国家重现耶路撒冷往日辉煌则需要通过决议直接成立。那么这两个国家将不复存在，国家也将变为耶路撒冷王国。通过此决议该国将获得 +25 威望，且耶路撒冷会继承宗主国的主流文化。

### 创建卫戍国

 +25% 全局人力修正 +30% 陆军上限修正 +30% 海军上限修正 +20% 防御效率 −20% 堡垒维护费 +20% 人力恢复速度

### 强迫附庸（军事）

A nation can be force vassalized as part of a peace treaty. In the negotiations screen, there is an option for "Become Vassal" under the menu "Treaties" which should be the farthest right menu button on the screen. When force vassalizing a nation, the warscore needed is determined by the total development of all their provinces. The base warscore cost per point of development is 1.[1] Sometimes, the total development is too high to vassalize the target nation. The normal maximum is a total development of 100. However, certain missions/cb's can lower the warscore cost by a % (example: Subjugation reduces cost by 50%, and cuts out any diplomatic power costs).

In the early game, only low-development countries with poor or few provinces can be vassalized via war. The maximum war score is 100% and a rich province typically costs about 25% war score. A good way to reduce a country's size is to force them to return cores and release countries, as these do not result in overextension or aggressive expansion for the annexing country, and if the nation is of a Buddhist faith, it does not pay diplomatic power.

The benefits to the military victor of choosing vassalization instead of annexation are:

• No Overextension penalty.
• Using diplomatic points instead of administrative points to annex vassalized provinces.
• The ability to feed a vassal, to conquer land without using one's own admin power, as well as to expand whilst having a lot of overextension.
• Less agressive expansion than simply conquering the provinces of the country.
• The vassal will manage its own armies in war, which is less micromanagement for a player ruling a massive empire.

The downsides to the military victor of choosing vassalization instead of annexation are:

• The vassal occupies a diplomatic relation slot, reducing the number of allies possible (but vassals are more dependable than allies).
• The direct benefits of those provinces to the overlord are smaller than if they belonged to the overlord (less tax, production, forcelimits, trade power, and the overlord can't build buildings). (However, the overlord and vassal combined are stronger than either one alone.)
• Longer time until the land is part of the victor's country. There is a waiting period of 10 years in addition to the time that it takes to diplo-annex the vassal.
• Once annexed the Local Autonomy of every province will be raised to 60%, instead of 50% if taken in war without a claim
• Once annexed, the country gains a -3 malus to its diplomatic reputation. This matters in regards to being elected as the emperor, diplo-vassalizing and diplo-annexing countries, and a host of other diplomatic actions as well. Without help from advisors, ideas, or events, annexing another vassal will be very slow or impossible until this malus expires.

Newly force-vassalized countries will receive a -100 opinion malus to relations with their overlord, which will decay at a rate of 2 per year. It is often a good idea to immediately begin improving relations with the new vassal to prevent disloyalty.

### 提议附庸（外交）

1. 必须与目标国家有 +190 的关系。
2. 必须与目标国家保持 的关系。
3. 目标国家必须处于和平。
4. 宗主国与附庸目标国的综合 科技差不能大于 50%，满足科技要求外，还要求目标国思潮接受个数比宗主国少最多1个。
5. 目标国家至多100
6. 一定不能拥有目标国家的核心省份。

Willingness to accept vassalization is shown in the tooltip for the check-mark in the "offer vassalization" button.

The factors that influence an AI nation's desire to accept a vassalization offer are:

Attitude towards proposer Ally: +10
Friendly: +10
Threatened: +10
Neutral: -20
Hostile: -100
Outraged: -100
We have a royal marriage +10
Trust Scales linearly between the following points:
+10 at 100 trust
0 at 50 trust
-40 at 30 trust
-2000 at <30 trust
Proposer's diplomatic reputation +3 per positive point
-3 per negative point
Difference in government rank +10 per difference in rank
Nation has a religion not in the same religious group -20
Nation has a different religion within the same religious group -10
Nation is a merchant republic -30
Proposer economic base compared to target nation +30 to -90
Proposer military power compared to target nation +20 to -40
Proposer is a merchant republic -10
Nation is member of the empire -25 if proposer is also a member
-75 if proposer is not a member
Nation is an elector -1000
Nation has subjects of their own -1000
Nation is  教宗国/the Pope -1000
Nation has more than 100 total development -1000
Nation is not a strategic interest -1000
Proposer owns target nation's core provinces -1000
Distance between borders -0.5 per distance between borders

†: Distance between borders can only be seen in debug mode.

‡: Determined by:

 ${\displaystyle {\text{relative economic base}}=60\,\cdot \,{\frac {{\text{base tax}}+{\text{base production}}+{\text{current vassal base tax}}}{({\text{target base tax}}+{\text{target base production}}+{\text{target base manpower}})^{2}}}\,-\,90}$

Where base tax and production are the total province base tax and production of the country without any buildings or modifiers. Note that these provinces have to be states, or they will not count. The base tax of all current vassals also adds to the economic base of the nation offering vassalization.

### 放弃附庸

• （被迫放弃）经一纸和平条约: 当宗主国输掉一场战争.
• （主动放弃）经外交行动: 宗主国可以以-25威望和减少与原附庸国-200的关系为代价解放附庸国. 但, 只要附庸的独立倾向超过50%,上述的关系惩罚将不会发生.

## 附庸提供的助力

Vassals are essentially puppets of their suzerain, or overlord country. They cannot declare war or enter royal marriages, except with their overlord. They always join their suzerain's wars, and cannot negotiate separate peace treaties.

The suzerain also receives military access and the ability to dock its boats in the vassal's ports, but not fleet basing rights. If the vassal is an elector in the Holy Roman Empire, its suzerain gets a +50 point bonus to the vassal's electoral vote opinion and a -50 point malus (stacking for each vassal) to the opinions of non-controlled electors.

Vassals may try to break free by declaring war on their overlord. They may also ask other nations to support their independence. Nations supporting independence are automatically called into the independence war, and act as temporary allies for the duration of the war. Other countries may offer support for independence without being asked, although vassals that like their overlord will never accept.

After ten years, vassals can be annexed by their suzerain, which gets cores on all provinces that the vassal considers cores. This makes vassalization a good way to expand without spending administrative points, or in some cases even without having to wage war.

### 来自附庸的收入

Vassals have to pay a part of their tax income to the suzerain. This part is determined by the ‘vassals tax efficiency’ of the overlord, which is the sum of all ‘income from vassals’ modifiers. The base value for the all countries is 10%.[2] A overlord can increase its ‘vassals tax efficiency’ by the following:

Conditions
+33% as iqta
+25% as elective monarchy or feudal monarchy
+10/20/30% as tribal kingdom (depending on government rank)
+5% with parliament and “Harmonization of State Laws” or “Create Offices for Vassal Nobles” as active issue
–5 - +5% depending on legitimacy (0-100)

Ideas and policies:

+50%
• 进攻-行政：附庸税收政策
+25%
• 卡内姆 博尔努的传统
• 中美洲的传统
• 影响理念组 1：朝贡体系
• 足利的理念 7：改革幕府体系
• 波斯尼亚的理念 5：王公们的领地
• 阿瑜陀耶的野心
• 影响-经济：附庸义务法案
• 影响-扩张：海外领土
• 影响-质量：行政一体化法案
+20%
• 马里的理念 1：恢复马里的宗主权
• 隆达的野心
• 赞比西的野心

Events:

Event modifier Trigger Duration
+25% Firm Hand Influence ideas event: “A Firm Hand for 10 years.
+10% Vassals Feel Safe Influence ideas event: “Vassals Feel Safe for 10 years.
−5% Vassals are unwilling to pay scutage Subject interaction events: “War Never Changes for 5 years.

The overlord can increase the paid vassals tax by +50% if he asks for scutage in exchange for the renunciation of military support from the vassal.

### 附庸提供的军队上限

Vassals increase the suzerain's land force limit by 1[3] and marches by 2[4], but not the naval force limit. This contribution can be increased by the following.

Ideas and policies:

+100%
• 影响理念组 7：边界领主
• 足利的理念 7：改革幕府体系
• 波斯尼亚的理念 5：王公们的领地
• 影响-贵族：自治庄园
• 影响-经济：附庸义务法案
• 影响-进攻：统一指挥

Decisions and events:

Event modifier Trigger Duration
+100% Firm Hand Influence ideas event: “A Firm Hand for 10 years.

## 独立倾向

Vassals have liberty desire (introduced with patch 1.10) like the other subject nations. A liberty desire less than 50% will remain in the 'loyal' attitude, while vassals with a liberty desire above 50% will become 'disloyal'.

Nations who are historical rivals will have a base liberty desire of 50% and as such make poor vassals since to diplo-annex them there needs to be less than 50% liberty desire.

• 拒绝在宗主发动战争时派遣军队协助.
• 主动邀请或接受他国给予的独立支持.
• 与其他不忠的附庸结盟.
• （向宗主国）发起独立战争 (附庸基于它和它的盟友的总军事实力与宗主国相近，即认为有机会打赢独立战争，此时战争随时会爆发).

Many factors affect liberty desire, including relative military strength, relations, royal marriages, trust, and having the same dynasty.

Because vassals taken from wars have poor opinions and distrust of their new liege, it is important to raise the vassal's opinion as much as possible before the truce from the war expires. When suing for peace, increasing the warscore cost of the demands will also increase the truce period, granting more time to improve vassal's opinions, build trust through wars, and allow bad opinion modifiers to decay.

## 附属国互动

This is done through the Subject Interaction section of the Subject Menu.

## 吞并

1. 附属国成为附庸至少10年。附庸时间可在附庸国外交界面附属图标 的提示中确认。
2. 宗主国与附庸的关系至少 190
3. 附庸国的独立倾向少于 50%
4. 附庸国处和平状态。
5. 附庸国控制其首都。

Annexation progress of vassals appears in the diplomacy interface as a small vertical progress bar next to the vassalage icon . If the annexation process is cancelled before completion, all progress is lost, including the invested diplomatic power.

#### 花费

−25%
• 影响理念组 3：整合精英
−20%
• 影响-行政：附庸吞并法案
−15%
• 奥地利的理念 1：帝国雄心
• 赞比西的理念 6：希雷河谷的财富
• 纳克索斯的野心
−10%
• 财阀-影响：完整主权法案

Note that even with a −100% modifier to annexation cost, annexation will still cost a minimum of 12.5% of the full annexation cost.

Since the cost of annexation can change during annexation, it may be worth only buying modifiers once the full annexation cost (post-modifier) has nearly been paid, especially if the modifier is a policy (i.e. the cost is increased for every month over 10 years for which it is active).

Consider timing annexations so that they finish within six months of one another: since an event such as that giving the Annexed Vassals modifier can be postponed for up to six months, the player can, for this time, avoid the hit to diplomatic reputation, and can annex vassals at full speed without waiting 10 years between annexations. Since the -3 diplomatic reputation from the Annexed Vassals modifier does not stack, you will also avoid both long periods with the penalty and short periods with an extreme penalty.

#### 合并速度

• +1 基础速度
• +1 如果双方有着同样的宗教
• +1 如果双方(的主流文化）在同一个 文化组
• ±1 每点正/负的 外交声望

#### 合并效果

• +5 威望
• 触发事件获得名为“合并附庸”的全国修正10年，效果为 -3 外交声望
• -30 与其它附庸国关系，不影响卫戍国
• -25 如果吞并的附庸是神罗的成员国，你与其它帝国成员关系
• Control of all the vassal's provinces, army, and navy. This may put the overlord over its force limit.
• Cores on all the vassal's core provinces.
• 60% local autonomy in all new cores (or their previous autonomy level, if above), and 0 if the overlord already had a core.

## 外交合并策略

### 准备工作

• Better Relations Over Time is the most important bonus, as it makes Aggressive Expansion decay faster. Hiring a Diplomat increases this modifier.
• 不变的关系修正包括:
• 王室联姻 +25
• 军事同盟 +50
• 尔之死敌，吾之盟友 (有共同的敌人) 年关系+1，至+20
• 共奉一宗 +10
• 给与被入侵时派军护独的承诺 +10
• 给予目标国家军事通行权+10
• 赐予皇恩 +40 (神罗皇帝可以通过花费帝国权威来改善与某个神罗成员国的关系).
• 持续衰减的关系修正包括:
• 通过把钱当做礼物给予目标国家，（根据给予金额）关系从+1到至多+25 (持续时间60月)
• 通过响应军事求援得到可敬的联盟+10 (逐年递减)
• 通过不与敌国单方面脔和，订立条约得到战至最后+20(逐年递减).
• 使用军队保证附庸的省份主权 +10 (逐年递减)
• 将附庸的省份从占领状态中解放出来 +25(逐年递减)。包括保护，解放叛军的目标或已攻占省份。
• 给予战争补助, 至多 +15。 一旦取消, 改善的关系随之消失。

### 选择附庸

• 有许多丢失的核心省份或宣称: wage war with other nations and take the provinces cored or claimed by the vassal so they can core the land instead of you. The "Grant Province" option should be used from 1.14 onwards, as it reduces the liberty desire of the vassal by half of the total development granted, easily keeping it in line, provided granting the province does not increase your subject's total development over 100.
• 拥有强大的军事和经济理念-大附庸能在一场战争中投入20,000+ 的士兵, 从不同的方向进攻城池,清理未被占领的无城防省份，以及有时能独自打赢一场战役。
• 政体非商业共和; they have a malus for accepting vassalization.
• 无敌对造核修正 - these are applied to all cored provinces, including newly cored ones "fed" to the vassal, making those provinces even more expensive to annex than they normally would have been. In particular, North African and Caucasian nations tend to have these modifiers in their traditions.
• 无需宗主帮助即可平定叛乱。 While you can keep your armies around to patrol for rebels in vassal lands, it is better to look for a vassal that has unrest reduction, tolerance or missionary strength in its National Idea set. Ideally the vassal will be the same religion as the overlord but it is not necessary.
• 与宗主国拥有同样的文化和宗教-这两项都会增加每月的外交合并花费的点数。 如果你的外交威望较低，供奉一宗，文化同源将会大大的提高你与附庸的合并速，。

### 授予附庸封地（喂小弟吃地）

The advantages of vassal feeding are primarily in not having to deal with rebels as much (as the AI will often use its military power for Harsh Treatment, saving you the expense) and saving Administrative Power in favour of expending Diplomatic Power; Administrative Technology is almost always more important than Diplomatic Technology as it allows you to unlock new idea groups. From patch 1.16, care must be taken to balance vassal feeding with direct expansion as falling too far behind in diplomatic tech relative to administrative and military tech will increase corruption.

#### 要求归还附庸核心（格拉摩根战法）

Alternatively, a vassal may independently occupy an enemy province where it has a core. A province sieged by a vassal will be occupied by their suzerain, but an exception is when the vassal has a core in the province and is the siege leader. The suzerain can also transfer occupation to their vassal whenever needed.

Once a province is occupied by the vassal, the suzerain war leader can demand the enemy to directly cede the province to the vassal. If this happens, the vassal will use their own diplomatic monarch points though their overlord will still take the Aggressive Expansion for the province. This also gives an opinion boost, but less than returning a core with the suzerain's diplomatic monarch points.

Beware that the Administrative Efficiency used to compute the province war score cost is the one of the country who receives it. If you have a better Administrative Efficiency than your vassal, you will have to pay more war score cost to give him directly those provinces (via "Cede province" or "Return core") than taking them for you directly and ceding them to the vassal in peacetime (via the option in the Subject Interaction menu (available with the Common Sense DLC)). But as previously mentioned, the first option will give less Aggressive Expansion, and give an opinion bonus, whereas the second one will give more AE and also a reduction in Liberty Desire for the concerned subject (more than you get from the opinion boost in the first option), which stacks (contrary to opinion, capped at 200).

## 参考资料

1. See in /Europa Universalis IV/common/defines.lua PEACE_COST_BECOME_VASSAL = 1
2. See in /Europa Universalis IV/common/static_modifiers/00_static_modifiers.txt (Static_modifiers#Base_values).
3. See in /Europa Universalis IV/common/static_modifiers/00_static_modifiers.txt (Static modifiers#Vassal subject).
4. See in /Europa Universalis IV/common/static_modifiers/00_static_modifiers.txt (Static modifiers#March subject).
 附属国 自定义附庸 • 殖民领 • 卫戍国 • 君合国 • 贸易公司 • 朝贡国 • 附庸国
 其它 使者 • 军事同盟 • 关系 • 外交反馈 • 间谍 • 殖民 • 教宗 • 神圣罗马帝国 • 中国皇帝