Thereafter, the Hasana under their leader Muhanna al-Fadil, became the prominent Bedouin tribe in this region and gained government sanction to collect tolls from the caravans on the road to and from Palmyra.
[2] Despite their overpowering of the tribes east of Hama and Homs, the Hasana were not solidly established in the region as they wintered deep into the Syrian Desert, sometimes as far as northern Arabia.
In 1814, large numbers of the Fad'an and Siba'a entered the plains east of the Orontes River, prompting the Hasana and the Rwala (another Anaza subtribe) to ally with local and provincial troops to drive them out.
The leader of the Hasana, Trad al-Milhim was among the Syrian tribal sheikhs to enter Damascus with the victorious Entente-backed Emir Faisal.
[4] In 1977 the Syrian tribes experienced a surge of influence at the parliamentary level, with results engineered by the government of President Hafez al-Assad.