nationalism: why couldn't I take it all?

[AngelRay]

SO SORRY It's a mistake. It was colonialism and not nationalism.
Sorry for the inconvenience and have a nice day.



Hi,

Since it's the first time I play in the America's with a custom nation (I'm on the road for "first come first serve" in fact) and not trying a WC, I'm not using my usual "imperialism only after tech 23" strat because there is now some provinces in my culture group which I can still have.

Castillan is one of my accepted cultures (primary culture is english and I'm an Empire).

So when I just declared war to Castillan Plata, who has only castillan culture lands, I thought using "nationalism" would be smart : more chances to take it all in one war.

So war went fast, I stackwiped their 29k men with one of my armies, asked for peace.

Surprise, surprise, surprise (would say Braccus Rex for those who get it) : some lands cost bird mana. (edit to be clear due to the first answer: all the lands are castillan culture but some lands cost 0 bird mana (those I took) and some cost X bird mana (those I didn't take, see screenshot).

I'm shocked because I don't understand why some land cost bird mana, and why some land doesn't cost bird mana while all land is castillan.

Hereunder is the map:

Yellow is the "now" Plata.
Red lines englobes what was their before the war, which I could take with nationalism with 0 bird mana cost (since it was in the CB target).

So my question, because I didn't find the answer on the wiki:

Why couldn't I take it all?

(I'm not uploading the culture group but trust me: it's all "castillan" - I have it in front of my eyes while writing on the second screen.)

Thanks for your answer.

 

[ecrurudesby]

Defender holds a province in attacker's culture group. Castilian is not in the same culture group as English.

 

[AngelRay]

Then why did the other provinces I could take cost 0 bird mana?

They were castillan too.

 

[Bouchart]

You might've taken a bunch of 1/1/1 provinces and have high enough Admin Efficiency etc. that the dip point cost rounds down to 0.

 

[AngelRay]

I checked, and I see that some of the provinces I took (Mendoza eg) have dev 7 while one I couldn't take has dev 3.
All those I didn't take started at 8 or more dip cost, and those I did take were at 0.



I don't know if you are thus right or not :/. If nobody can answer, I'll wait for the truce to end, then do a test war with nationalism again, and I will see at that time if I have more information about this matter.

Edit:
OMG. I'm so sorry...

I have badly read the thing. I used colonialism not nationalism....

Sorry for the inconvenience.