Jurchen unification
The Jurchen unification was a series of events in the late 16th and early 17th centuries that led to the unification of the Jurchen tribes under the Jianzhou Jurchen leader Nurhaci. While Nurhaci was originally a vassal of the Ming dynasty who considered himself a local representative of imperial Ming power, he also had a somewhat antagonistic relationship with the Ming due to Ming involvement in events early on in his life that led to the death of his father and grandfather combined with his own increasing ambition.