Monotheism
A person who believes in one God, is called a Monothiest: (Monothiesm).
Followers of islam are called muslims and they believe that there is only one god.
Jewish people only believe in one god.
The word for belief in more than one god is POLYTHEISM The belief in only one god is called MONOTHEISM
Monolatrism is when you worship only one God, but know other exist
God told The Ten Commandments, which means the Jewish people had to believe in only him. So they could only believe in one god, which is called monotheism <the belief in only one god> polytheism <the belief in more than one god>.
Only one god.
Is considered an atheist by the mainstream.
First off, your question is a little bit odd -- gods didn't believe in gods, they were gods. It's like saying that you don't believe in humans. Now, if you mean what was it called when someone believed in only one god, that's called monotheism. Believing in multiple gods is called polytheism.
that there is only one God.
There is only one god. The Jews believe in one god only.
Yes.--- they only believe in one God... which is Allah.Yes. Muslims believe in the same god worship by Christians and Muslims.