To annex vassal in victoria 3, you must first demote them to a puppet vassal. This can be done by reducing their opinion of you to less than Cordial. Once they are a puppet, you can annex them by using the Annex Vassal diplomatic play. This play will only be available if you have a high enough relation with your vassal.
The difference between the different vassal types is their level of autonomy and the amount of tribute they pay. Dominions are the most autonomous and pay the least tribute, while tributaries are the least autonomous and pay the most tribute.
Here is a table summarizing the differences between the three vassal types:
Here are some of the reasons why you might want to annex vassal in victoria 3:
- To increase your own power. By annexing a vassal, you gain their land, resources, and population. This can give you a significant advantage over your rivals.
- To prevent them from becoming independent. If you don’t annex a vassal, they may eventually become independent. This could weaken your position and allow your rivals to gain an advantage.
- To gain access to their resources. Some vassals may control valuable resources that you need. By annexing them, you can gain access to these resources and use them to boost your own economy.
Of course, there are also some risks associated with annexing a vassal. For example, it can be expensive to integrate a new territory into your empire. Additionally, annexing a vassal may upset other countries, which could lead to diplomatic problems.
Overall, whether or not to annex a vassal is a strategic decision that depends on your own goals and circumstances.