Smiley678 said:
I still think it's weird when trying to get Bavaria to join the alliance. Since the country isn't a vassal of any country, and the relation between Bavaria and the country I'm playing as is +200.
Does it mean that I can't force-annex a country even if the religion is the same and I control all the provinces (Saxony)?
Smiley, you may not force-annex (that is, annex by operation of a peace deal ending a war) a country unless it is either:
1) A one-province nation, or
2) A pagan country of any size.
Religion (other than paganism) is irrelevant.
You may diplomatically annex a country (that is, annex by diplomatic offer a country) only if certain conditions are true (
Nagel has them mostly correct, but not totally accurate, and
Alessandro also makes at least one error in the conditions listed).
1) You must have them as a vassal, for at least 10 years
2) You must have them in your alliance
3) You must have relations with them of 190+
4) You must share a common land border
5) You must be able to have a royal marriage with them (
this is often incorrectly reduced to the concept of same religion, but that is not accurate; you can have royal marriages with other religions, though exactly what religions will be different at different times during the game, for example, Reformed and Catholic can marry after the Edict of Tolerance)
6) You must be larger than they are economically
7) The vassal must be at peace
Please note that the longer you wait past 10 years (up to a maximum of 30 years) the better your chances. Also, the more the economic disparity, the better your monarch is diplomatically, the more the troops you have, the better the chance you have.
You can see the complete details of this and all other diplomatic actions in the [thread=172908]Diplomacy FAQ[/thread].
As for the issue of Bavaria, there must be some impediment to asking them to join the alliance. This might be that they are in an alliance, they are a vassal, you are not the head of your alliance, or you are the head, but you already have 4 other members besides yourself, in which case you cannot ask a 5th member in. Look carefully to see which of these is true, and if you hold your pointer over the greyed out option to offer alliance, you will get a tooltip that might help you understand why it is greyed out.
