The Kurds were promised a referendum on independence in the Treaty of Sevres in the Turkish part of Kurdistan and Mosul, but not Kurdish  Iran. Armenia was promised independence, not just a referendum, and its borders drawn up by President Wilson, and the Christian Assyrians were promised protection, in part from the Kurds who played a not insignificant part in the Armenian and Assyrian  genocides-- thus the reservations about the Kurds. However, the Turks under Ataturk never agreed to the dismemberment of Anatolia (or the loss of Mosul), refused to sign, and fought to make sure the Treaty  was never enforced. America turned its back on Wilson and Armenia and the Treaty, and Britain and France declined to go to war with Ataturk  to enforce the Treaty.  Canada played an important role by refusing to support Britain (the Chanak crisis once taught in Ontario schools)  in enforcing the Treaty.  So it was replaced by the 1923 Treaty of Lausanne and the modern Middle East was created.