Answer:
He co-founded and edited a universal encyclopedia titled Encyclopédie
Step-by-step explanation:
Diderot co-founded and edited an enormous project. This was a universal encyclopedia, with entries on science, the arts, government, religion, and philosophy. The Encyclopédie, as it was known in French, took more than 20 years to produce. When it was finished, in 1772, it contained 28 volumes, 75,000 entries, and about 20 million words. The Encyclopédie was the Enlightenment forerunner of the Encyclopedia Britannica and of today's Wikipedia.