The idea that permeates internet atheist thought is that the dark ages were caused by Christianity and drove the world into darkness. This even setting human advancement back hundreds of years. This narrative is false and just a silly theory with only evidenced by a family guy episode.

Labarum Apologetics:

Christianity, Science, and the Dark Ages 001: Introduction

Christianity, Science & the Dark Ages 002: What Were the Dark Ages?

Christianity, Science & the Dark Ages 003: Hypatia and the Great Library of Alexandria

Christianity, Science & the Dark Ages 004: The Rise of Modern Science

Christianity, Science & the Dark Ages 005: Other Antichristian Myths on the Dark Ages

Christianity, Science & the Dark Ages 006: Review & Conclusion

Dr. Joshua Moritz:

The War that Never Was – The Myth of the Historical Conflict Between Christianity and Science

Dr. Lawrence Principe/Dr. Edward Davis:

The Origin of the Myth that Science and the Christian Faith Have Always Been at War