引用自 Fedor_Rail：

I have Vinland and Spartania as imperial associates for some time now and... Is there some mission-locked event/decision for annexing them? I ask this question due to the fact that it costs 6756 diplomatic power to annex Spartania, which makes dip. annexation pretty much impossible.
Or are you supposed to just sit with associates?

I've seen people use influence and admin ideas (for policy) to get the cost quite low. I haven't found a good way yet to lower the integration cost for a specific subject/subject type yet.

Understood, thanks!

It's by no means impossible to annex it even at 6-7K cost. Sure it'll take you 50+ years, but you can.

That said, in addition to what's mentioned (influence ideas also give you a reduction in itself), there's also an event that can fire if you got influence ideas that reduce the cost for a certain period of time, and there's a parliament debate that can also further reduce it.

引用自 Scurek：

引用自 Fedor_Rail：

I have Vinland and Spartania as imperial associates for some time now and... Is there some mission-locked event/decision for annexing them? I ask this question due to the fact that it costs 6756 diplomatic power to annex Spartania, which makes dip. annexation pretty much impossible.
Or are you supposed to just sit with associates?

I've seen people use influence and admin ideas (for policy) to get the cost quite low. I haven't found a good way yet to lower the integration cost for a specific subject/subject type yet.

If you want to make them easier to annex, you could always make them annex through event/decision or mission. You could also add cores, as cores in a vassal reduce annexation cost.