I want to know the answer to the following question:
When did Kublai Khan conquer the song dynasty?
All the background I'm provided with is that "Kublai Khan did not conquer the Song dynasty in South China until 1279, so Tibet was a component of the early Mongol Empire before it was combined into one of its descendant empires with the whole of China under the Yuan dynasty (1271–1368).". Is that enough to answer the question?
Answer: yes