Assertion: abbasid caliph | /r/CapableOf | seek to bolster their authority
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text: The early Abbasid caliphs also tried to invoke, especially in their regnal titles, the messianic expectations rife at the time; they sought, as had the Umayyads in their own ways, to bolster their authority with appeals to pre-Islamic royal traditions and symbolism, and they presided over elaborate circles of patronage that involved a broad spectrum of the cultural and religious elite of the time.