What is now Jordan has been inhabited by humans since the Paleolithic period. Three stable kingdoms emerged there at the end of the Bronze Age: Ammon, Moab and Edom. Later rulers include the Nabataean Kingdom, the Roman Empire, and the Ottoman Empire. After the Great Arab Revolt against the Ottomans in 1916 during World War I, the Ottoman Empire was partitioned by Britain and France. The Emirate of Transjordan was established in 1921 by the then Emir Abdullah I and became a British protectorate. In 1946, Jordan became an independent state officially known as The Hashemite Kingdom of Transjordan. Jordan captured the West Bank during the 1948 Arab–Israeli War, which it later lost in 1967, and the name of the state was changed to The Hashemite Kingdom of Jordan in 1949. Jordan is a founding member of the Arab League and the Organisation of Islamic Cooperation, and is one of two Arab states to have signed a peace treaty with Israel. The country is a constitutional monarchy, but the king holds wide executive and legislative powers.