What is the font used in Europa Universalis 4?

3 Answers
The Clausewitz engine (the screen shot is of one of the games using it, Europa Universalis III) has fonts as bitmaps saved in the gfx\fonts\ sub-folder of the game's installation folder. For mods, it's in the same folder of the mod's sub-folder.
I ran the font through Identifont and I this font is, IMVHO, Adobe Garamond. The match, especially with the number forms like 4 and 9, is basically perfect.
You can find names of all the fonts in .fnt files in /gfx/fonts. Just open a file in question with a text editor.