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My first reaction was: Horizontal and vertical alliances (https://en.wikipedia.org/wiki/Warring_States_period#Horizontal_and_vertical_alliances_.28334-249_BC.29

by wenbin 11y ago

My first reaction was: Horizontal and vertical alliances (https://en.wikipedia.org/wiki/Warring_States_period#Horizontal_and_vertical_alliances_.28334-249_BC.29 https://en.wikipedia.org/wiki/Warring_States_period#Horizont...)