Islam is God religion since start of universe creation. Refer to question below.
However, Islam per God revelation of Quran to prophet Muhammad (PBUH) through the angel Gabriel (or Jibril) started in year 610 AD and continued to year 632 AD (when prophet Muhammad died)
Islam was first time started in mecca in current Saudi Arabia when Muhammad (PBUH) heard some voices (revelations) when he was praying in a cave.
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Islam is not a physical object to be discovered. It is a religion that its name Islam means submission to God and surrender to God will. Accordingly, Islam started by start of universe creation as all God creations are created on the principle of full submission (Islam) to God.
Answer A
no body discovered this religion. It was the best religion chosen by Allah (God in English) ,the greatest of all, for the whole world. And it was present at the time of Adam and Eve (peace be upon them). They preached it and God kept sending his messengers to continue the message of peace and praying to one God (that means Islam). It will remain till the Judgement Day
Answer B
Mohammedanism,or Islam is the religion introduced by the prophet Mohammed, born in the city of Makkah in 570 ad. Islam is essentially much the same as the religion of the Jews with some elements borrowed from the Christian religion.
Answer C (hint on Answer B)
Nothing in Islam religion is called Mohammedanism. It is a naming called by non Muslims to refer Islam to prophet Muhammad the same way they refer Christianity to the Chrest. Islam is a word that means full surrender and submission to God, the Creator. So, prophet Muhammad; and all God prophets; also are Muslims and call for Islam in this sense.
I am not Muslim, so I may have some facts wrong. A man had a rich wife and prayed a lot. He would go out and he prayed almost all day long. One day he heard a voice of Gabriel. He tells him to tell others there is only one god. When he does so, he is laughed at by others. He still continues to share this. People wanted to throw him out of the city, but her wife was rich. When the wife dies, the men threw him out. He goes to another city and he shares it again. This time he succeeds. After many years, he goes back and the people welcome him again.
Hi
To have a detailed information about Muhammad (Peace Be Upon Him) please refer to the added link ( Islam Questions & Answers ).
Biography of the Prophet
Good luck
The Islam religion was found by a god of some sort, just as Judaism was spread by a messiah known as Abraham
Islam wasn't discovered; it was created.
Muhammad was the founder of Islam and the proclaimer of the QurΚΎΔn, Islam's sacred scripture.
Islam is the religion based on the teaching of Muhammad.
islam
The meaning of the name Muaz Muhammad in Islam is "rich healer."
Islam was introduced by the Prophet Muhammad.
Muhammad ( PBUH ) is the Prophet of Islam.
Muhammad started teaching Islam religion in the year of 610 A.D
Islam is based on the teachings of Muhammad.
Muhammad - PBUH - Is Not The Founder Of Islam ! Islam Is A Religion From Allah And Muhammad Is A Prophet Who Carried This Msg From Allah To People And He Became A Msngr. At Age 40 Years .
Muhammad was not the founder of any branches of Islam. In fact, he was not even the founder of Islam, rather the messenger. As well as this, Muhammad and Islam discourage branches within Islam so it clashes with the question.
MUHAMMAD
The answer is Allah not Muhammad, Muhammad is a prophet