Hanifa is its principal watercourse; its course is marked by an almost continuous series of palm groves and settlements, among which Deraiya the former, and Riad the present, capital of the Ibn Saud kingdom are the most extensive.
In 1801 Saud, son of the amir Abdul Aziz, led an expedition to the Euphrates, and on the festival of Bairam, the 10th of April, stormed Kerbela, put the defenders to the sword, destroyed the sacred tomb, scattered the sacred relics and returned laden with the treasures, accumulated during centuries in the sanctuary of the Shia faith.
In May 1814 Saud died, and his son,Abdallah, attempted to negotiate, but Mehemet Ali refused all overtures, and in January 1815 advanced into Nejd, defeated the Wahhabi army and occupied Ras, then the chief town in Kasim.
In the meantime Sheik Mubarak had found useful allies in the Muntafik Arabs from the lower Euphrates, and the Wahhabis of Riad; the latter under the amir Ibn Saud marched against Ibn Rashid, who at the instigation of the Porte had again threatened Kuwet (Koweit), compelled him to retire to his own territory and took possession of the towns of Bureda and Aneza.
The movement, recognized by Ibn Saud, Emir of Nejd, had taken definite shape after 1910; and in 1921 it still seemed likely to have far-reaching effects upon the attitude of the people of Central Arabia towards other Arabian communities and even to the outer world.
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