Answer :
Gojoseon civilization, which dates back to 2300 BCE and had a city-state structure, spread throughout the Korean Peninsula, Manchuria, and far eastern China north of the Yangtze River.
The Gojoseon civilization: what is it?
The earliest kingdom on the Korean Peninsula was Gojoseon.
According to Korean mythology, Gojoseon was established in 2333 BCE by Dangun Wanggeom (Tangun), who was the progeny of the god Hwanung and a female bear who had been changed into a woman, as described in the Samguk yusa('Memorabilia of the Three Kingdoms') from the 13th century CE.
This legend might represent the introduction of Bronze Age culture to Korea.
The Liao River is Gojoseon's northern border, while the Jin (Chin) state is its closest neighbour to the south.
To know more about Ancient Korean Civilization please visit: https://brainly.com/question/7642387
#SPJ4