"Warring State period" . . . "Warring States Period (475-221 B.C.)" . . "Warring States period" . . "China" . . . . "Warring-States Period" . "Warring State Period" . "states" . "warring states period" . "Warring States period" . "Warring state period" . . . "Warring states" . "Warring States Period" . . . "warring states" . . . . "Warring States-era" . "Zhanguo" . "China's Warring States period" . "major realms" . . . . . . "Warring-States" . . . "late Zhou" . "Warring States" . "Wars of Warring States period in China" . . "Eastern Zhou Dynasty" . . "warring States" . . . "Period of the Warring States" . . . . "Iron Age" . "China had been" . . . . . . . "the Warring States" . "Warring States texts" . "horizontal and vertical alliances" . . "Warring States era" . . . .