1.29 version is in the description.

That looks to be from the Death and Taxes mod. I think the Commonwealth itself serves as a fine way of showing the Jagiellon Dynasty's unity. That is a beautiful shade of blue though. The color and flag actually really remind me of the vanilla nation Nitra.

Jagiellonian Empire, Personal Union of Poland, Lithuania, Hungary and Bohemia, under the Jagiellonian dynasty.

https://en.wikipedia.org/wiki/Jagiellonian_dynasty
https://upload.wikimedia.org/wikipedia/commons/d/d0/Jagiellonian.png
https://upload.wikimedia.org/wikipedia/commons/4/4d/Europa_Jagellonica.svg

From Eu3:

http://i.imgur.com/SfYc6.jpg
http://i.imgur.com/0kmF2.jpg

Update?

Go ham, I don't care too much if you take some stuff.

Hey, Can I integrate some formable nations from this mod into my mod called "Extended Timeline Enhanced Immersion Project"? I'd only integrate the ones that don't exist in ET and its submods, and I'd likely change some things around and add some things of my own in my mod.

There should be an exeption fpr the North German Union because its very unhistoric to need Bohemia as part of your empire to form NGU

I'm in between projects but I could see an ET working version at some point. Wouldn't be hard.

(continued)

Not sure what changes Baltic Union might need. Maybe, instead of land that starts with Baltic culture (which includes East Prussia but excludes Estonia), change it to requiring land in the Livonia region and Lithuania area? This would more or less match the current lands of Lithuania, Latvia and Estonia.

The Angevin Empire and Illyria nations would probably not be needed for an M&T version of this mod, since both can be formed by enabling fantasy nations at the start of the campaign.

(continued)

Celestial Caliphate and Heavenly Kingdom would both need to replace "Manchu" with "Jurchen" for their cultural requirements. (the "Chinese culture group" requirement would not need to be changed)

Greater Maghreb would need to change its land requirement from the (one) Maghreb region to the three Maghreb regions - al-Aqsa, al-Awsat, and al-Adna.

NGF and SGF would need their respective land requirements changed from the North Germany and South Germany regions, to the Germany superregion (and possibly also the Prussia region) for the NGF, and Greater Austrian Circle for the SGF

Lovely mod.

Should work as-is with Beyond Typus (disclaimer: have not yet tested). An Extended Timeline version of this mod should be made, with the tech requirement changed to about 50 or so.

-=-=-=-=-=-

An M&T version would need more changes. Shouldn't be too difficult, but more than just changing the tech requirement (to 20 or so) would be needed due to changes to regions and cultures:

I appreciate it, but I don't think better flags is much of a problem. The designs for 5 of them are straight from Victoria 2, and the others I kinda like. You could make a sub mod if you wanted, although for a mod this small that's probably silly.

hi can I help you with development of this mod, I can design better flags

nice

Anglo-Francia is now Angevin, Yugoslavia is Illyria, and the CC and HK have had their decisions modified as stated earlier.

Sometimes changing religion is extremely beneficial and easier than converting, for example a strategy for Serbia is to expand into the Middle East through the Caucasus, so it's way easier to just convert to Sunni

If you feel that's the better choice then I'll more than likely change it. Changing religion on a dime was never intended for Eu4, I wanted to offer the option, but it's kind of silly to have a christian china in the year 1444 anyway.

Or, you could just change it so HK and CC are only formable if Christian or Islamic respectively...

The Heavenly Kingdom is based on the Heavenly Kingdom of Great Peace that appeared in the mid 1800s. It's a silly little country but I always liked it, so I added it so there was a special Christian Chinese empire option. See here: https://en.wikipedia.org/wiki/Taiping_Heavenly_Kingdom .
The Celestial Caliphate is a fictional nation that is basically an islamic version of the Heavenly Kingdom. It seemed like a fun little alternate history thing, and is more likely to happen than a Christian China anyway.
Just a side note: AI will only form the HK and CC if they are already Christian or Islamic respectively, although Human players can make the choice at any time.

I know a little about the Angevin empire, but I didn't know a lot so I refrained from using it. I'll look into it. I just made Greater Maghreb because I wasn't sure of a better nation or name for it. I picked Yugoslavia because it literally meant "South slav nation". That all being said, I will totally change the names if they're more historically fitting!

It's a good mod, some suggestions though
Angevin Empire is a better name for the Anglo-French Union, seeing as it was a real thing with the English inheritance of half of France in the 12th century.
"Greater Maghreb" shouldn't really be a tag on its own imo, it should more be a decision that grants some bonuses like an empire rank and claims, but some formable decisions for the area are necessary
Also, Illyria is a better name for Yugoslavia because the Croatian and Serbian nationalities were referred to as "Illyrians" in the 18th/19th centuries.
On a side-note, what are the "Celestial Caliphate" and "Heavenly Kingdom" supposed to be? I haven't tried it, I avoid playing China until I obtain Mandate of Heaven.