He is not the "main deity". He is the Only Deity. The One God of Abraham. In Hebrew Eloha, in Aramaic (the language of Jesus) Alaha, and in Arabic Allah.
This is the only God that has ever been. No partners has He, and no offspring. He is not like His creation, and is not within His creation. He is beyond all creation and beyond all senses.
"Say He, alone, is God. The One upon whom everything completely depends upon - for everything. He does not beget offspring, nor was He begotten of anyone; and there is nothing at all like unto Him". Qur'an, Chapter 112
Muslims are the one people who refuse to worship anything other than the One God, alone.
God.
Muhammad was the main prophet of Islam.
without a shadow of doubt the most important & the greatest figure in Islam is the prophet Muhammad PBUH.
Islam is the main religion of Saudi Arabia.
Iran's main religion is Islam; more specifically, a type of Islam known as Shia Islam.
No Muslim figure is holy per Islam teachings. However, prophet Muhammad is the prophet of Islam religion per God Quran revelation to him through the angel Gabriel (Jibril)
Islam
Mohammed was the founder.
Currently (and ever since the 700s C.E.) Islam is the main religion in Egypt. However, Sunni Islam only became dominant over Shiite Islam in the 1200s.
The main religion practiced in Algeria is Islam. About 98 percent of the population is Islam. There are also about 10,000 Christians that reside in Algeria.
I'd have to say Christianity for certain and with the rise of Islam, then Islam is number two.
The most prominent figure in modern Islam
for Shia Islam Iran and Iraq for sunni Islam Egypt and Saudi Arabia