The Kurdish people of Iraq lived in the mountainous and terrain of the Mosul Vilayet. It was a difficult region to control from the British perspective because of the terrain and tribal loyalties of the Kurds. There was much conflict after the Great War between the Ottoman government and British on how the borders should be established. The Ottomans were unhappy with the outcome of the Treaty of Sèvres, which allowed the Great War victors control over much of the former Ottoman lands through the distribution of formerly Ottoman territory as League of Nations mandates.