Unification of Saudi Arabia

The unification of Saudi Arabia was the process by which the various tribes, sheikhdoms, and emirates of most of the Arabian Peninsula were conquered by the House of Saud, or Al Saud, between 1902 and 1932, when the modern-day Kingdom of Saudi Arabia was proclaimed. Carried out under the charismatic Abdul Aziz Ibn Saud, this process created what is sometimes referred to as the Third Saudi State, to differentiate it from the first and second states that existed under the Al Saud clan.

The Al Saud had been in exile in Kuwait since 1893 following the disintegration of the Second Saudi State and the rise of Jebel Shammar under the Al Rashid clan. In 1902, Ibn Saud recaptured Riyadh, the Al Saud dynasty's former capital. He went on to subdue the rest of Nejd, Al-Hasa, Jebel Shammar, Asir, and Hejaz (location of the Muslim holy cities of Mecca and Medina) between 1913 and 1926. The resultant polity was named the Kingdom of Nejd and Hejaz from 1927 until it was further consolidated with Al-Hasa and Qatif into the Kingdom of Saudi Arabia in 1932.