Khalkha Mongols
The Qing Empire defeated the Dzungars in the 1750s and proclaimed the rule over Oirats through Manchu-Mongols-Alliance (a series of systematic arranged-marriages between princes and princesses of Manchu with those of Khalkha Mongols and Oirat Mongols, which was set up as a royal policy carried out over 300 years), as well as over Khoshut-controlled Tibet.