This Lesson's logo is a Spanish caravelle

 

The fact that the Pope used the terms "from pole to pole" in describing the dividing line has been used by some South American geopoliticians, especially from Argentina and Brazil, to argue that the Pope was also dividing up the (as of then) undiscovered continent of Antarctica between the Portuguese and Spanish crowns. The issue has contemporary significance in terms of the competing claims of Argentina, Chile and Great Britain in the portion of Antarctica which faces South America.