I want to know the answer to the following question:
Who was the  vice royalty of the Sakya regime established by?
All the background I'm provided with is that "P. Christiaan Klieger, an anthropologist and scholar of the California Academy of Sciences in San Francisco, writes that the vice royalty of the Sakya regime installed by the Mongols established a patron and priest relationship between Tibetans and Mongol converts to Tibetan Buddhism.". Is that enough to answer the question?
Answer: yes