Since the 1.6 update, the people designing the maps for Hearts of Iron IV seem to be lazy when it comes to historical accuracy, whether it be World War 2 or modern borders. Before 1.6, the states were accurate for WW2 borders, and in some updates, a few post-WW2 accuracy changes were made, but it didn't really change the WW2 accuracy. However, with the 1.6 update, some of the states were changed to have modern borders without regard for WW2 borders. And they didn't even finish the job for modern borders. In Africa, the problems with the modern borders are:
For Europe, most of the issues are in Yugoslavia. However, some issues I'd like to mention for WW2 (and, in some cases, modern) borders outside of Yugoslavia:
- Basutoland (Lesotho) and Swaziland are still a part of South Africa even though the provinces needed for those states are drawn out.
- Madagascar controls other islands that are still controlled by France or are separate nations.
- Western Sahara stretches a bit too far north
- There is no nation for Cape Verde
For Europe, most of the issues are in Yugoslavia. However, some issues I'd like to mention for WW2 (and, in some cases, modern) borders outside of Yugoslavia:
- Eupen-Malmedy is a part of Wallonia and was a part of Germany until the Treaty of Versailles and re-incorporated in 1940
- Reichskommissariat Ostland controlled the Baltic States, but never Soviet Belarus. The capital was also in Riga. And eastern Bialystok wasn't made a separate state even though Germany incorporated it directly into Germany
- Reichskommissariat Ukraine didn't control Galicia, East Bessarabia (Odessa), or land east of the Dnieper River
- Moldova's borders go slightly too north
- Liechtenstein and Andorra don't exist (though, those are small nations).
- Danzig wasn't directly controlled by Poland until after WW2
- The Generalgouvernment in Poland can't be made with accurate borders, as Germany incorporated Polish Silesia, Prussia, Posen, and some other Polish land west of Warsaw
- Georgia doesn't go far enough west
- Nakhchivan is a part of Armenia even though it was given to Azerbaijan
- The post-war Western occupation zones in Germany and all post-war occupation zones in Austria can't be recreated (Berlin and Vienna were split between all 4 occupying powers, America occupied Bavaria, northern Baden-Wurttemberg, Hesse, Bremen, Salzburg, most of Upper Austria, and parts of Styria, France occupieded southern Baden-Wurttemberg, Rhineland-Palatinate, Tyrol, and Voralberg, the Saar was a separate French puppet state, Britain occupied North Rhine-Westphalia, Lower Saxony, Hamburg, Schleswig-Holstein, Carinthia, and the rest of Styria, and the Soviets occupied the rest)
- The border between Slovakia and Czechia becomes distorted into Slovakia when it gets closer to Poland
- For modern borders, the Serbo-Croatian border is not modern. It's WW2.
- Prekmurje was annexed by Hungary and Ljubljana by Italy.
- South Istria is a part of Croatia, yet the entire region, including Trieste, which was given back to Italy, can either be given to only Croatia or only Slovenia.
- Kosovo's borders are janked up
- In WW2, Italy occupied Western Macedonia and Sanjak, which doesn't happen in-game
- Bahrain, Singapore, and Brunei don't exist even though they were administered as separate colonies (Singapore was a part of the Straits Settlements, not Malaya) and became separate nations
- Timor-Leste doesn't exist as a country
- The Pacific nations are clumped together even though they became more nations (Palau is a part of Micronesia, New Caledonia is a part of Tahiti, etc.)
- Aksai Chin can't be given to China
- The Caribbean has the same lazy nation problem the Pacific has (though, to not as much of an extent as the Pacific)
- Some states in the US are grouped together (New England, the Virginias, Maryland-Delaware)
- Only one of Canada's provinces (New Brunswick) has accurate borders and 2 have passable borders (Quebec and Newfoundland-Labrador). The rest are wack (Nova Scotia controls Prince Edward Island, Nunavut is too big on the mainland but doesn't control any islands even though it didn't exist until the 1990s (the islands are a part of Quebec in the game), the Northwest Territories extend too far south but doesn't own Nunavut, Yukon is too big, and each of the rest of the provinces lost land the rest of the provinces lost land to one of those).
- Peru's border with Ecuador only came around during WW2 due to a smaller war, yet, is in the 1936 start date of HOI4
- 9
- 5
- 5
- 4