I want to know the answer to the following question:
Who was the viceregal Sakya regime overthrown by?
All the background I'm provided with is that "Wylie argues that Ming titles of "King" granted indiscriminately to various Tibetan lamas or even their disciples should not be viewed as reappointments to earlier Yuan dynasty offices, since the viceregal Sakya regime established by the Mongols in Tibet was overthrown by the Phagmodru myriarchy before the Ming existed.". Is that enough to answer the question?