I want to know the answer to the following question:
What was manufactured that helped the Valencian economy improve?
All the background I'm provided with is that "The 18th century was the age of the Enlightenment in Europe, and its humanistic ideals influenced such men as Gregory Maians and Perez Bayer in Valencia, who maintained correspondence with the leading French and German thinkers of the time.". Is that enough to answer the question?
Answer: no