Treaty of Daan
The Treaty of Daan (or Da'an) (Arabic: صلح دعان) was an agreement signed in October 1911 at Daan in the Yemen Vilayet by a representative of the Sultan of the Ottoman Empire and Imam Yahya Muhammad Hamid ed-Din, the Zaydi Imam of Yemen expanding autonomy in the areas of the Ottoman province inhabited by the Zaydis, and ending the Yemeni–Ottoman conflicts.