Who were the great sailors and explorers of the South Pacific?

Who were the first sailors to reach and settle in Iceland, Greenland, and North America?

Who was first to circumnavigate Africa?

Who is credited with inventing the magnetic compass?

The map projection we use most often today is call the

Identification of position north or south of the equator was made possible by Hadley's invention of the

The captain of the first voyages made purely for the scientific study of the oceans was

2200 years ago, this man calculated the circumference of the Earth using on simple math.

This an's map of the Mediterranean world surrounded by endless ocean would dominate map making for over 1000 years.