Political map of South & Southwest Asia 20 May 1927 (Treaty of Jeddah): In December 1925 the Saudis completed their conquest of Hejaz, creating the Kingdom of Hejaz and Nejd. In order to gain British recognition of his conquests, Ibn Saud signed the Treaty of Jeddah (Treaty of Jeddah (1927)), agreeing not to threaten the numerous British protectorates which surrounded his new kingdom.