ALIEN TECHNOLOGY ON EARTH
Channel: Untold Mysteries
Date: 2021-04-20

Their things that remain unexplained until now interms of the technologies that were used before Christ (BC) which is the time were internet was not propounded. This video unpacks different theories that were put forward by different professors as well as scientist. Some belief their were once a race that lived before who had the best state of the art machines, some which is the the majority believe in alien technology , drop your views and comments below and see what's your view on this matter 

SOURCE
https://youtu.be/BmUrJaOo1Lw