Muslims believe that Allah sent special people called prophets, to Earth.
The Ka’bah is the monument to the One God. It is a cube-shaped structure in the centre of the grand mosque in Makkah. First build by the prophet Adam [alayhis], then was build by Prophet Ibrahim [alayhis] and Isma’il [alayhis]. These prophets and their follewers belived in the One True God. However after their died, people forgot their teachings about the One God. When prophet Muhammad [saw] was born, the Ka’bah had no fewer then 360 altars to different gods around it.