Gojoseon was an ancient Korean kingdom, considered the first kingdom of the Korean people. According to the Samguk Yusa and other Korean medieval-era records, Gojoseon was founded in 2333 BC by the legendary Dangun, said to be the grandson of Heaven. It was centered in the basins of the Liao and Taedong Rivers, ruling over northern Korean peninsula and southern Manchuria. Archaeological evidence of Gojoseon are found in the transition from the Jeulmun pottery to the Mumun pottery around 1500 BC… (More on Gojoseon)