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 (peace be upon him), then was build by Prophet Ibrahim (peace be upon him) and Isma’il (peace be upon him). 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 (peace and blessings of Allāh be upon him) was born, the Ka’bah had no fewer then 360 altars to different gods around it.