I want to know the answer to the following question:
When did the Habsburgs  sell the Sundgau territory to France?
All the background I'm provided with is that "Beset by enemies and seeking to gain a free hand in Hungary, the Habsburgs sold their Sundgau territory (mostly in Upper Alsace) to France in 1646, which had occupied it, for the sum of 1.2 million Thalers.". Is that enough to answer the question?
Answer: yes