The Sinai has long been the domain of the Bedouin, nomadic tribes who travel with their flocks of sheep and camels, moving from pasture to pasture and living in large family tents.
The Bedouins have long inhabited the Sinai.  
mnli hypothesis: The Bedouins have long inhabited the Sinai.   premise: The Sinai has long been the domain of the Bedouin, nomadic tribes who travel with their flocks of sheep and camels, moving from pasture to pasture and living in large family tents.