Seven Warring States

The Seven Warring States or Seven Kingdoms (traditional Chinese: 戰國七雄; simplified Chinese: 战国七雄; pinyin: zhàn guó qī xióng) were the seven leading hegemonic states during the Warring States period (c. 475 to 221 BC) of ancient China:[1] During the Eastern Zhou dynasty, the weakened Zhou central sovereignty quickly lost control of its confederate vassal states, and the numerous autonomous states began overreaching and expanding their political ambitions via diplomacy and warfare, sparking a period of chaotic conflicts known as the Spring and Autumn period.

The formation of the Seven Warring States was the culmination of trends during the preceding Spring and Autumn period, when the patchwork of states created by the Western Zhou dynasty were conquered and absorbed through warfare, coalescing into seven larger polities.

Qin, Qi, Chu and Yan already existed as states during that period; Qin and Yan, owing to their remote locations, were traditionally considered second-tier powers, while Chu and Qi were among the dominant states of the period, in direct competition with the state of Jin.

In 403 BCE, King Weilie of Zhou recognized Jin's partition, leading to the creation of three new states: Wei, Zhao and Han.

Other major states included Wu and Yue, with the latter conquering the former in 473 BCE.