He was commanded by Allah the Almighty to convey the message of Islam after being chosen as the last prophet from Him to the mankind.
Islam was not started by prophet Muhammad (PBUH). It was started by God since the start of universe creation. Islam is an Arabic word that means in its universal sense full submission and surrender to God (Allah in Arabic) and hence it was the faith and religion from the universe creation date. Islam per Torah revelation by God to prophet Moses is called Judaism. Islam per The Bible revelation by God (same God) to prophet Jesus is called Christianity. Islam per Quran revelation by God (same God) to prophet Muhammad is called the same name Islam. All God prophets since Adam; through Noah, Abraham, Ismael, Isaac, Jacob, Joseph, Moses, ..., Jesus, and Muhammad (peace be upon them all) call for Islam or ; in another words, call for submission to God as the one and only one God with no partner, no son, no companion, no associate, and no equivalence.
It was not he who started Islam. All the prophets of Almighty Allah (God) had been preaching Islam. Islam was revealed to him. He was the last Prophet of Islam.
Muhammad started teaching Islam religion in the year of 610 A.D
He was Muhammad SallallahuAlihewasalam (PBUH) on him the Holy book Quran was Nazilled so he started Islam !
mecca
Islam started by the revelations to prophet Muhammad. Muhammad (peace be upon him) was born in 570 A.D, but the revelations started when he was 40, at 610 A.D. So Islam officially started in 610 A.D, where it was a small movement at that time
Islam, a religion founded by the prophet Muhammad started in AD 622.
Islam was started long before prophet Muhammad (PBUH). It was started by God; the Creator; by start of universe creation. However, Islam per God revelation of Quran to prophet Muhammad (PBUH) started by start of Quran revelation through the angel Gabriel to prophet Muhammad (PBUH) on year 632 AD. Refer to questions below.
mecca is the place Islam emerged and started and was the city of prophet Muhammad (PBUH)
The leader of Islam is prophet Muhammad (peace be upon him) and started in Mecca (or Makkah) in Saudi Arabia.
The last Prophet of Islam Hazrat Muhammad Mustafa (SAW) started preaching Islam in 570 AD at the age of 40, in Makka Mukarma, Saudi Arabia.
In Arabia, in 610 when the last Prophet of Islam Hazrat Muhammad Mustafa (SAW) started preaching Islam to the people.
Islam started by start of universe creation as Islam in its universal sense and objectives is the full submission and surrender to God. So all God creatures are created on the principle of Islam (full submission to God). Islam per God Torah revelation to Moses is called Judaism. Islam per Bible revelation to Jesus is called Chritianity. Islam per God Quran revelation to Muhammad is called the same name Islam. Islam per God Quran revelation to prophet Muhammad (PBUH) started by start of Quran revelation in year 610 AD to prophet Muhammad (PBUH) in Makkah (Mecca) in Saudi Arabia.
Islam was not founded by prophet Muhammad. Islam was founded by God since start of universe verse creation. Prophet Muhammad (PBUH) called for Islam per God Quran revelation to him through the angel Gabriel; that started in year 610 AD. Refer to question below. Prophet Muhammad was in year 610 AD at age 40 when he received; , in the month of Ramadan; his first revelation from God. Three years after this event; Muhammad started publicly preaching these revelations.