Dragon Riders of Pern - Anne McCaffrey

Pern is inhabited by people from earth that left many centuries ago and live in a medieval like society, although there are telegraphs, and flame throwers and some other modern technology. They have telephatic dragons and their dragonriders who are “imprinted” when they are still in the egg, but only some people have this power…really?. They fight to survive a plague and it’s a series of books that lead you to a very different world and the lives of some of them