That's a good question for Google!
https://www.google.com/search?q=Why+were+the+Middle+Ages+called+the+Dark+Ages%3F&oq=Why+were+the+Middle+Ages+called+the+Dark+Ages%3F&aqs=chrome..69i57j69i60.932j0j7&sourceid=chrome&ie=UTF-8
Why were the Middle Ages called the Dark Ages?
1 answer