Islamic religion.
The founder of Islam is Allah (God in English) since start of universe creation through the middle ages until present. Refer to question below.
islam
Islam.
Just a male name, meaning 'praiseworthy' a variant of Mohammed, founder of the Islamic religion
The religion was named after its founder, Zoroaster or Zarathustra.
Islam was the religion that spread from the Arabian Peninsula to Africa.
There is no founder.
The prophet Zoroaster was famous as being the founder of Zoroastrianism. It is considered the pre-Islamic religion between the centuries 18th and 6th BC.
yes
"Islamic" means that it is related to the religion called "Islam". Such countries had, and still have, a population which, in their majority, was islamic.
If people studied the Islamic religion in full, then no one would be attracted to such a religion.