In 1358, the Sakya viceregal regime installed by the Mongols in Tibet was overthrown in a rebellion by the Phagmodru myriarch Tai Situ Changchub Gyaltsen (1302–1364). The Mongol Yuan court was forced to accept him as the new viceroy, and Changchub Gyaltsen and his successors, <answer>the Phagmodrupa Dynasty</answer>, gained de facto rule over Tibet.
Which dynasty became ruler of Tibet?  
the Phagmodrupa Dynasty