Qin dynasty
Note: King Zhaoxiang of Qin (秦昭襄王) had already been ruling Qin for 51 years when Qin annihilated the Zhou dynasty; however the other six warring states were still independent regimes. Some Chinese historiographers thus used the next year (the 52nd year of King Zhaoxiang of Qin) as the official succession from the Zhou dynasty.
King Zhaoxiang of Qin
Finally in 272 BC, Queen Dowager Xuan bared her fangs. She lured the unsuspecting Yiqu King to Ganquan Place again, and had him assassinated on the spot. Shortly after, the Qin army invaded and overran the leaderless Yiqu, permanently annexing its entire territory into the newly established commanderies of Longxi and Beidi (北地). The Xirong threat that had plagued the state of Qin for over five centuries was removed for good.