I want to know the answer to the following question:
In what year did European countries first recognize Switzerland's independence from the Holy Roman Empire?
All the background I'm provided with is that "The Old Swiss Confederacy had acquired a reputation of invincibility during these earlier wars, but expansion of the federation suffered a setback in 1515 with the Swiss defeat in the Battle of Marignano.". Is that enough to answer the question?
Answer: no