Sunni and Shi'a are the two major Islamic groups. I think that is what you are asking for
There are many
Cerebellum is not considered one of the main divisions of the adult brain. The main divisions are the cerebrum, cerebellum, and brainstem.
i believe there will be 73 different divisions within Islam till the day of ressurection, however these sects will all establish the same beliefs.
the spread of Islam.
Muhammad was the main prophet of Islam.
One of the main divisions are sub-divisions.
They are not real Islam divisions. They are just different schools. Mainly they are Sunnis and Shiites. Refer to question below.
Islam is the main religion of Saudi Arabia.
The smallest divisions on the main scale of a screw gauge are typically 0.5 mm.
The main religions are Buddhism, Hinduism, Judaism, Christianity and Islam. The first two are polytheistic and the last three are monotheistic. Judaism, Christianity and Islam all have major divisions and sects. I don't know if the same could be said about Buddhism and Hinduism as I have not studied them.
Physics, Chemistry and Biology are main divisions of science.
The two main divisions are rational numbers and irrational numbers.