In 1920 the British Commonwealth gained the Mandate of Palestine. In OTL, the British split of Transjordan from Palestine and gave it to the Hashemites. In this timeline, however, the British give Syria to the Hashemites as a protectorate of the Commonwealth, and Transjordan stays as part of Palestine.

17 years later, the Arabs begin a general strike against British rule. In this timeline there are 750,000 Jews and 1.6 million Arabs in Mandatory Palestine.