Güshi Khan
With his crushing victory over Tsogtu, Güshi Khan conquered Amdo (present-day Qinghai). The unification of Tibet followed in 1641–42, when Güshi Khan invaded Central Tibet and defeated the indigenous Tsangpa Dynasty. After his victory he was proclaimed (chogyal), i.e. the King of Dharma, or Teaching, by the Fifth Dalai Lama. With these events the establishment of a Khoshut Khanate was confirmed. Gushi khan granted to the Dalai Lama authority over Tibet from Dartsedo to Ladakh. The title "Dalai Lama" itself had previously been bestowed upon the third lama of the Gelug tulku lineage by Altan Khan (not to be confused with the Altan Khans of the Khalkha), and means, in Mongolian, "Ocean of Wisdom."