Advances and Forming Countries

One of the ways that many enjoyed EU4 was forming new countries and getting new sets of national ideas. Previously in EU5, country-specific advances were locked to currently being a specific tag, now you will keep them when you form a new country, and you will be able to research the unique advances for the tag you form.

However, there is a limit to this, as you can only form a country that is on a higher tier than what you currently are. So if you are playing as Sweden, which is a tier 2 tag, you can form Scandinavia, which is a tier 3 tag, but you can’t form Denmark, which is a tier 2 tag. Then you have the option to go for a tier 4 tag like Eastern Roman Empire, which is a bit of a challenge to form as Sweden, as you need to get primary culture Greek, convert to Orthodox and own Constantinople, and at least half of the Balkans and Anatolia.

A useful advance you can research after unifying Scandinavia..