1. The weakening of Timurids was closely related to “social sickness” period. This means that the members are overdependent with the Timur. After the death of Timur, the state lost its previous power and weakened. After the weaking of Timurids, Shirvanshahs state gained its independence. Moreover, in the initial period of 15th century, there was a battle between Timurids and Karagoyunlu. After this battle, Timurids departed from Azerbaijan and eventually, Karagoyunlu state established in Azerbaijan in 1410.