You said :
Somewhat later, in an ATTEMPT to reach even more people, he reached out THROUGH Jesus. Still later, he reached outTHROUGH Mohammud.
*God(ALLAH) do NOT ATTEMPT .HE DO.
*God do not need some one to reach through .HE SENT JESUS AND MOHAMMUD.
Then you says:
Afterall, had it not been for the support Mohammud recieved from his Jewish allies, would he have reached Medina and Mecca? Would Islam even exist were it not for the support of the other children of the book?
Mohammud reached madeena and mecca by the support of God(ALLAH).not any others.
God(ALLAH) do what he want to do .not what his creatures help to do!!!