The Jabrids took control of the region after overthrowing the Jarwanids in the 15th century and clashed with Hormuz for more than 2 decades over the region for its economic revenues, until finally agreeing to pay tribute in 1507.In the 16th century, the Ottomans added the Red Sea and Persian Gulf coast (the Hejaz, Asir and Al-Ahsa) to the Empire and claimed suzerainty over the interior.The area of modern-day Saudi Arabia formerly consisted of four distinct regions: Hejaz, Najd and parts of Eastern Arabia (Al-Ahsa) and Southern Arabia ('Asir).The Kingdom of Saudi Arabia was founded in 1932 by Ibn Saud.Its inclusion expresses the view that the country is the personal possession of the royal family.In ancient times the Arabian peninsula served as a corridor for trade and exhibited several civilizations.The kingdom of Lihyan (Arabic: لحيان) or Dedan is an Ancient North Arabian kingdom.
Although this is normally translated as "the Kingdom of Saudi Arabia" in English, The word "Saudi" is derived from the element as-Suʻūdīyah in the Arabic name of the country, which is a type of adjective known as a nisba, formed from the dynastic name of the Saudi royal family, the Al Saud (آل سعود).
Their loosely controlled trading network, which centered on strings of oases that they controlled, where agriculture was intensively practiced in limited areas, and on the routes that linked them, had no securely defined boundaries in the surrounding desert.
Trajan conquered the Nabataean kingdom, annexing it to the Roman Empire, where their individual culture, easily identified by their characteristic finely potted painted ceramics, was adopted into the larger Greco-Roman culture. Jane Taylor, a writer, describes them as "one of the most gifted peoples of the ancient world".
From the 10th century to the early 20th century Mecca and Medina were under the control of a local Arab ruler known as the Sharif of Mecca, but at most times the Sharif owed allegiance to the ruler of one of the major Islamic empires based in Baghdad, Cairo or Istanbul.
Most of the remainder of what became Saudi Arabia reverted to traditional tribal rule.
He united the four regions into a single state through a series of conquests beginning in 1902 with the capture of Riyadh, the ancestral home of his family, the House of Saud.