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In 1046 BCE King Wu of Zhou defeated King Zhou of Shang and founded the Western Zhou dynasty with its capital at Chang'an (modern day Xi'an). He gave his younger brother Guan Shu () a fiefdom around Zhengzhou, which became the State of Guan. Other territories in the Zhengzhou area bestowed by King Wu included the states of Kuai (), Eastern Guo, Zhai () and Mi ().