Agartha

Agartha is a legendary underground kingdom said to exist inside the Earth. The idea comes from 19th–early 20th century occult and mystical writings, especially in Theosophy and esoteric literature. Agartha was described as a vast, advanced civilization living beneath the surface, sometimes ruled by a being called the “King of the World.” It was often linked to the Hollow Earth theory—the belief that the Earth is hollow and inhabited. There’s no scientific evidence that Agartha exists. It’s considered a myth or piece of esoteric folklore, but it has influenced fiction, conspiracy theories, and adventure stories ever since.
Yakub is a scientist who, thousands of years ago, created white people through a selective breeding experiment on an island. This is a religious/mythic teaching, not history or science.