The dominate physical feature of the Middle East is the Arabian Peninsula
A mountain range, the Himalayas.
Population is not an attribute ascribable to inanimate objects such as physical features. It is biological organisms that have populations.
Arabic.
gas? I think it is oil
the African rift valley
The Nile Valley and Mesopotamia
Where have you been? Islam is the dominant religion in the Middle East and the culture of most of its people. Smell the roses, man.
Deserts cover much of the Middle East. Lebanon is the only Middle East country with no deserts.
Deserts cover much of the land in the Middle East.
Natural gas,minerals.petroleum
The main physical characteristic affecting regional settlement patterns in the Middle East is water.
Prior to the Crusades, there was no "unified Middle East government". The dominant countries in the Middle East were the Abbassid and Fatimid Caliphates, which were hereditary monarchies that ruled according to Sunni and Ismaili Shiite jurisprudence respectively.