Early Japanese food history was characterized by seasonal migrations and foraging from around 13,000 BCE to 900 BCE during the Jomon period. Later in the Jomon period, horticulture was introduced, including melons, burdock, beans, barley and millet. From 900 BCE to 250 CE in the Yayoi period, early rice agriculture developed alongside continued foraging, fishing and hunting. Rice, barley, millet and other grains as well as pigs and octopus traps were cultivated and domesticated. From the 3rd to 6th century in the Tomb culture period, Yayoi patterns continued alongside the emergence of stoneware and sake fermentation. Population growth and political consolidation also occurred.