What was muhammads role in establishing and spreading islam

Muhammad was the fouder of the Islam and is also considered, in their doctrine, as a messenger and prophet of God. He lived in the period of 570 CE and 632 CE. One of his beliefs was that people were not worshiping God correctly and, after some revelations he had, he proclaimed that God is One and people have to submit to God. The word Slam means surrender. They refer to God as Allah. The followers of Slam are also know as Muslims.

sumerians were responsible.