With the Horse Lords expansion, it is a lot harder to switch your government type. I'm playing as a tribal Irish character, in the north of Ireland.
I can't find anyway to switch from Tribal to Feudalism, and I can't find the answer online, anywhere.
How do I change government type in Crusader Kings 2: Horse Lords?
Best Answer
In order to become feudal you need
Once you fulfill all of these requirements it will unlock the Decision to Become Feudal. When you take that decision all your Tribal Holdings will convert to Castles (possibly with some buildings if you have upgraded the Tribal Holding according to the charts on this page) and it will automatically build Cities and Temples in Counties that do not already have one. It will not fill the final holding slot.