Some people were because he taught that there was only one God, Allah, and some people in Saudi Arabia were polytheistic, believing in many Gods, and they didn't like being told to stop worshipping their Gods.
In whole history, people around the world follow different teachings. Even in one family, one likely finds different if not opposing views about life. So, naturally, for every teaching addressed to the masses (said from Heaven or not) there are always people opposing it (even in matters said scientific) and Muhammad's teachings are not an exception.
HAZRAT MUHAMMAD {p.b.h} followers are called Muslim. See related question below for more information.
because Muhammads was messenger of god and he could get any success.
Because it went against what the church says.
Muhammad preached that people are equal, and that the rich should share thier wealth with the poor
He was Shepherd
Mecca, in Arabia.
As far as we know, he never said word one, either way. The people who claim his name sure have.
It was boring
Hamza
570-632
His wife Khadijah
No! Catholism's teachings are strictly against sainten