Islam in its basic principles , is a correction of Judaism and Christianity .
Islam= corrected Judaism = corrected Christianity. as simple as that !
Islam , through the Quran says that God sent Muhammed to correct what people did to the previous messages , through previous messengers (including notorious ones :Abraham, Moses, Jesus..etc).Muslims believe that Judaism and Christianity were the same faith. and that priests , rabbis , etc... changed things through the years and centuries to suit what they needed : for material and power purpose mainly. as an example , Islam teaches that Jesus (as a messenger of God) was fought and hated by high Rabbis , because he came to correct the falsehood that Judaism had come to. and because his teachings (who were no different than Moses's and other messengers before him) , were against their profits... they did all they could to get him killed.
Islam (or Mohammed) never said that it's a new religion.
Just for your information folks !!
enough of this ignorance !