So according to HOI4 wiki, there are 8 major countries with national focuses in the base game and 13 … They get messages like being told the mod is still only valid for 1.8, or being told they don't have a proper descriptor file. This mod probably is for people who are already fast with with managing provinces and playing the base map, It's basically flaw with the game itself, There simply is no option to mass manage stuff. License military technology to bring other nations’ weapons to the field or sell your advances to the highest bidder. Posted on by by Poland is interesting because it is a hugely popular minor (it's roughly as popular as Spain and more popular than Greece). Thankfully, HOI4 will give you a warning if you're about to load a mod that isn't up to date.