Whilst I appreciate the inverted commas around the word "discovered" to indicate that there were people living in the New World before Columbus got there, he wasn't even the first European to make the crossing. Leif Erikson was there nearly 500 years earlier (or really, if you count Greenland as part of the "New World", then either his father Erik the Red or Snaebjorn Holmsteinsson should get the credit).