Assertion: caliph's army | /r/NotCapableOf | go
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Source sentences:
text: Muslim conquered the spain + portugal in 711 A.D, but in 654 A.D they invaded it for first time by the orders of Caliph Uthman, in 655 when the agitation against uthman grew muslim armies were unable to go further and withdrawl from there outposts, thus it was a only short occupation of the coastal region of Andulus in spain.