Historicity++ is a mod that is meant to bring historical accuracy to the game.
Notable changes include fixing the Kongolese UU to an attested Central African name and correcting “Sumeria” to “Sumer” as is more commonly used in most circles. Also, MALAYSIA IS NOT KNOWN FOR ITS WATS. This mod will be continually updated as errors arise or are discovered.
You can read more here.
How to install:
– Just unzip it to the mods folder, it should be auto enabled