North America is the third largest continent after Asia and Africa, and the fourth largest in population (approx 454 million). This continent is part of the “New world” when it was discovered by Europeans in 1492. Although theories exist that place Scandinavian Viking in North America before Christopher Columbus landed his ships. Linked to South America its name is also derived from Amerigo Vespucci who was the first European to have identified North and South America as not being India. Rugby, North Dakota was identified as the centre point of North America and is market with a 4.5 meter high Obelisk. North America has 38 political divisions, many of which are dependencies of European nations and therefore not classed as independent states.