His encyclopedic history, the Jami al-Tawarikh ("Compendium of Chronicles") was commissioned by Mahmud Ghazan, and initially was a history of the Mongols and their dynasty, but gradually expanded to include the entire history since the time of Adam to Rashid al-Din's time.
Rashid was assisted by Bolad, a Mongol nobleman who was the emissary of the Great Khan to the il-Khanid court. Bolad provided him with much background about Mongol history, especially about the Borjigin clan.
The Compendium was completed between 1307 and 1316, during the reign of Muhammad Khodabandeh (Oljeitu).
Read more about this topic: Rashid-al-Din Hamadani