Urgh, this is nasty:

  curl -i 'https://www.cia.gov/the-world-factbook'
  HTTP/2 302 
  content-length: 0
  location: https://www.cia.gov/stories/story/spotlighting-the-world-factbook-as-we-bid-a-fond-farewell/

They didn't even have the decency to give it a 410 or 404 error.

Same for all of the country pages - they redirect back to the same story: https://www.cia.gov/the-world-factbook/countries/morocco/

The thing was released into the public domain! No reason at all to take it down - they could have left the last published version up with a giant banner at the top saying it's no longer maintained.