Abd Allah az-Zubayr declared himself the
Caliph in the
Hijaz and consolidated his power by sending a governor to
Kufa[?]. Soon, Ibn Zubayr established his power in Iraq, southern Arabia and in the greater part of Syria.
(source) (
http://www.themuslimhistory.info/INenglish/ImamNcal/Chap11.htm)
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