▁later ▁capital ▁of ▁the ▁former ▁emp ire ▁was ▁conquer ed ▁by ▁the ▁British ▁Empire ▁in ▁ 1 8 5 8 . ▁ ▁Il k han ate ▁▁ ▁The ▁Il k han ate , ▁ruled ▁by ▁the ▁Tol uid ▁House ▁of ▁H ul agu , ▁formed ▁in ▁ 1 2 5 6 ▁and ▁compr ised ▁Iran , ▁Ira q , ▁Trans c au cas us , ▁eastern ▁Asia ▁Minor ▁and ▁Western ▁Turk istan . ▁While ▁the ▁early ▁r ul ers ▁of ▁the ▁k han ate ▁increasing ly ▁adopted ▁Tib et an ▁Buddh ism , ▁the ▁Mong ol ▁r ul ers ▁converted ▁to ▁Islam ▁after ▁the ▁ent hr on ement ▁of ▁Il k han ▁Gh az an ▁( 1 2 9 5 – 1 3 0 4 ). ▁In ▁ 1 3 0 0 , ▁R ash id - al - D in ▁Ham ad ani ▁in ▁co operation ▁with ▁Mong ol ▁histor ians ▁comm enced ▁writing ▁J ami ▁al - T aw ar ikh ▁( S ud ur ▁un ▁Ch ig ul gan , ▁Comp end ium ▁of ▁Chron icles ) ▁under ▁Gh az an ' s ▁order . ▁The ▁work ▁was ▁completed ▁in ▁ 1 3 1 1 ▁during ▁the ▁reign ▁of ▁Il k han ▁Ö l je it ü ▁( 1 3 0 4 – 1 3 1 6 ). ▁Alt an ▁Deb ter , ▁written ▁by ▁a ▁Mong ol ▁historian ▁Bol ad ▁Ch ins an , ▁served ▁as ▁a ▁basis ▁for ▁writing ▁J ami ▁al - T aw ar ikh .