According to Islamic belief, how did Muhammad get the ideas that started Islam?

While meditating in a cave on Mount Hira, Muhammad had a revelation. He came to believe that he was called on by God to be a prophet and teacher of a new faith, Islam, which means literally "submission." ... Followers of Islam (Muslims) are expected to pray five times each day while facing Mecca.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail

answer; /// the above is ( false );