The first basis belief of Islam is the belief that there is only One God (Allah) and that the prophet Muhammad (pbuh) is his messenger.
The basis of Judaism, Christianity and Islam is the belief in the ONENESS of Almighty God (Allah - in Arabic).
That is monotheism.
The specific term for this is Monotheism.
Monotheistic is what I think you are looking for
Islam
Islam
The believers in one God and that Muhammad is His prophet are named Muslims. It is the first pillar of Islam five pillars. Refer to question below.
which belief formed the basis of the caste system in India
Tauhid is the extremely believing and spiritual belief in Islam.
It is religion or religious belief. It is not a race.
ISLAM
Islam