Mr. Menzies keeps talking about all these explorers, and it's been quite some time since I studied them in school. Therefore, I am taking all the European explorers that he mentions in the introduction and putting them in chronological order, with the stuff that they "discovered."
1488 - Bartolomeu Dias (page 33) rounds the Cape of Good Hope (southern Africa)
1498 - Vasco da Gama (page 33) becomes first European to reach India by sea.
1492 - Christopher Columbus (page 33) arrives in the Bahamas. (The Encarta link is a pretty long bio on Columbus & has some fun information. It says that there was a reward for sighting land, nearly a year's pay, & that Columbus dishonestly pocketed it himself. This fits with Mr. Menzie's depiction of Columbus & his brother as crooks.)
OK, I'll be back to add more explorers later, as they come up.