Analysis of information sources in references of the Wikipedia article "Caliphate" in English language version.
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{{cite web}}: CS1 maint: url-status (link){{cite news}}: CS1 maint: deprecated archival service (link)In the course of the later eleventh and twelfth century, however, the Fatimid caliphate declined rapidly, and in 1171 the country was invaded by Ṣalāḥ ad-Dīn, the founder of the Ayyubid dynasty. He restored Egypt as a political power, reincorporated it in the Abbasid Caliphate and established Ayyubid suzerainty not only over Egypt and Syria but, as mentioned above, temporarily over northern Mesopotamia as well.