Pokémon have coexisted with humans for hundreds of millions of years, but early humans were unable to tame them until the invention of the Poké Ball 200 years ago and the birth of the trainer profession.
Ancient civilizations (such as the Mayans and Atlantis) used the power of Pokémon, but their abuse led to destruction.
In modern cities, Pokémon are integrated into all walks of life, but there are still wild Pokémon surviving in the "Rust Belt" or secret places.
Pandaria (Asia), Westeros (Europe), Arakif (Africa), Tamriel (North America), Azeroth (South America), Pyke (Oceania), Everwinter (Antarctica)