Wadi Sirhan

1917 battle in the Arab Revolt of World War I

Arab tribe

desert frontier of the Roman Empire

human settlement in Saudi Arabia

valley in Jordan and Saudi Arabia

The Ruwallah (, Rwala Arabic ir-Rwāle, singular Ruweili/Ruwaili) are a large Arab tribe of the northern Arabian Peninsula and Syrian Desert, including Jordan.

The Salīḥids (), also known simply as Salīḥ or by their royal house, the Zokomids (Arabic: Ḍajaʿima) were the dominant Arab foederati of the Byzantine Empire in the 5th century. They succeeded the Tanukhids, who were dominant in the 4th century, and were in turn defeated and replaced by the Ghassanids in the early 6th century.