Britain pledged Arab independence (McMahon-Hussein Correspondence, 1915–16) for revolt against Ottomans. Instead, Sykes-Picot (1916) secretly partitioned the region; Balfour Declaration (1917) promised a Jewish homeland in Palestine. At Paris, these were implemented via mandates.
Arab delegates (e.g., Emir Faisal) were marginalized. Mandates (France: Syria/Lebanon; Britain: Iraq, Palestine, Transjordan) were imposed as "trusteeships"—thinly veiled colonialism.
Balfour incorporated into Palestine mandate. Arabs saw this as dispossession of a majority-Arab land.
Shared betrayal unified diverse Arab leaders/populations around anti-colonial nationalism.
Wilson's Fourteen Points (self-determination) raised global expectations; Arab cause gained liberal supporters.
Mandate borders (flawed) became the boundaries of modern Syria, Lebanon, Iraq, Jordan, Palestine/Israel—shaping the regional map.
Legacy: Deep distrust of Western intentions, fueling conflict to this day.