Civciv5
Grand Emperor
I wouldn't couldn't call these "counterparts".Aztecs, not Mexico.
Khmer, not Laos.
Maya, not Guatemala.
Persia, not Iran.
Rome, not Italy.
Vikings, not Norway.
Zulus, not South Africa.
I also must correct you that the Maya controlled parts of Guatamala, Mexico, Belize, Honduras and El Salvador.
The Khmer civilization is not from Laos, but Cambodia.
The Khmer people still exist, and their nation is currently called Cambodia, the adjective is Khmer.
Zulu is only a small part pf South Africa.
Persia is just another name for Iran. In fact, many ancient empires of Persia clled itself Eranshahr, of which Iran is derived.
The Vikings (aka Norse) are Denmark and Sweden as well, not only Denmark.
I also regret the fact the Aztecs are some kind of DLC in already Eurocentric game.