The word "discover" is a transitive verb that means "to uncover, to find out, to expose". If you look at the word from its literal side, dis means "without" and cover means "concealment". So, literally, this word means "without concealment", or "revealed", but in the form of a transitive verb.
Sample Sentences using Discover:
the Americas. It could have been Columbus. It could have been the Vikings. It could have been the East Asians.