Secta Siitica (Arabice شيعة šīʿa, "factio (scil. Ali caliphae)"), sive Islam Siiticum, etiam Siismus appellata, est altera fidei Islamicaeramus(en), post Sunniticam. Quam inter 130000000 et 190000000 circiter Musulmanorumterrae sequuntur; quod omnium circa 15 centesimas est.[1]Regio quam incolunt aliquando "luna Siitica" appellatur.
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