 In the Jeulmun pottery period (approximately 8000 to 1500 BCE), hunter-gatherer societies engaged in fishing and hunting, and incipient agriculture in the later stages.Since the beginning of the Mumun pottery period (1500 BCE), agricultural traditions began to develop with new migrant groups from the Liao River basin of Manchuria.During the Mumun period, people grew millet, barley, wheat, legumes and rice, and continued to hunt and fish.