First contact with the New World was after the times that are referred to as Medieval Times. Contact with the New World began in the 1400s while the Medieval Times began around the 1000s.
to order people around
Neither the word "Xerox" nor the Xerox Corporation existed in medieval times. Xerox is a trademark and an invented word - invented around 1958. Xerxes, however, was an ancient Persian emperor, long before medieval times, but his name was known in medieval Europe.
There were no dinosaurs in medieval times.
King Richard was around during the medieval times.