Islam is what all the Prophets of God taught. The word simply means: peace through the willing acceptance of God's will.
So the origin of Islam is God speaking to Adam, Noah, Abraham, Ishmael, Isaac, Jacob, Joseph, Moses, David, Solomon, John, Jesus, Muhammad and all the other Prophets - peace be upon them all.
Google the phrase: Muhammad in The Bible and see the articles that Muslim scholars have written on the subject.
There is no evil in Islam, just peace
Sunni Islam, Shi'a Islam, Christianity, Judaism, and the Baha'i Faith.
They are mentioned in the Qur'an.
Muhammad was the main prophet of Islam.
Islam is the main religion of Saudi Arabia.
Iran's main religion is Islam; more specifically, a type of Islam known as Shia Islam.
Islam
75 to 100 years
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.
for Shia Islam Iran and Iraq for sunni Islam Egypt and Saudi Arabia