Several political forces of local clans (Tsukushi Province, Kibi Province, Izumo Province, Yamato sovereignty, and the Kenuuji clan) in verious areas in the Japanese Islands emerged around the middle of the Yayoi period, and these forces as a whole was referred to as Wakoku by the Chinese dynasties.
弥生時代中期頃から日本列島の各地に政治勢力（筑紫国、吉備国、出雲国、ヤマト王権、毛野氏など）が形成されていき、それら勢力の連合体を中国の諸王朝が倭国と称した。