Allah was an the name of a moon god in pre islamic times. The pagen arabs did worship many deity(360 gods) but allah was the greatest of all gods for them. mecca was the centrum for their religion. muhammeds trib the Quraysh did even worship the moon god allah. Muhammeds father or unkel was calld abdellah mening allas slav.
infact Islam is nothing more than A REVIVAL of the ancient Moon-god cult. It has taken the symbols, the rites, the ceremonies, and even the name of its god from the ancient pagan religion of the Moon-god. why do you think there are so many moon symbols.