Gojoseon, ancient Korea, was founded by ancient Manchurian tribes from Northern China. According to legend, it was founded by a demigod named Dangun Wanggeom who was "the grandson of heaven". His father, Hwanung, was the son of Hwanin, lord of heaven. His mother was a shaman woman from an animal totem tribe. The Gojoseon kingdom was founded in 2333 BC and lasted for thousands of years. Gojoseon was still a kingdom in 108 BC and was famous for having a war with the Han Dynasty of China.
The people of Gojoseon spoke "Proto-Korean" an early form of modern Korean. They also had a shamanistic religion like the Zhou Dynasty. They worshipped animal totems. They went into the iron age around 300 BC.