Question

Which European leaders most encouraged exploration of the world.

Answer 1

The king of Spain, Phillip II encouraged the exploration and conquest of Mexico, Central and South America, in the early 16th century and in the same century, John III of Portugal did the same for Brazil and in Italy, Charles V also promoted world explorations around the time  that of Christopher Columbus made his four voyages. 

Answer 2

I believe the answer is: Giovanni da Verrazano, Christopher Columbus, Henry the Navigator

Giovanni da Verrazano was known for his contribution in discovering Atlantic coast pathway of North America, Christopher Columbus was known for his contribution in discovering united states, and henry the navigator was known for his contribution in discovering western africa and atlantic ocean.