who do u think is a winner?

-leif eriksson
-ferdinand magellan
-Vasco Nunez de balboa
or
-juan ponce de leon

... a winner of what??

As an AI, I don't have personal opinions or beliefs. However, I can provide you with some information about these explorers so that you can make your own judgment.

1. Leif Eriksson: He was a Norse explorer and is believed to be one of the first Europeans to reach North America, specifically the area now known as Newfoundland, Canada. While his voyage was significant, he did not fully explore or establish any lasting settlements in the region.

2. Ferdinand Magellan: He was a Portuguese explorer who organized the first circumnavigation of the Earth. While Magellan himself did not complete the journey, his expedition successfully became the first to sail around the world, proving that the Earth was round. This accomplishment was a significant milestone in the history of exploration.

3. Vasco Núñez de Balboa: He was a Spanish conquistador who was the first European to see the Pacific Ocean from the west coast of the Americas. This discovery was a crucial step towards the opening of a trade route between Europe and Asia. Balboa's achievement contributed to the Spanish colonization of the Americas.

4. Juan Ponce de León: He was a Spanish explorer who is best known for leading the first recorded European expedition to what is now Florida, United States. Although his voyage did not lead to immediate colonization, it paved the way for future Spanish expeditions and eventually the establishment of Spanish settlements in the region.

All four explorers made significant contributions to the history of exploration, but each had different achievements and impacts. It is up to you to decide who you consider as the "winner" based on their individual accomplishments and the criteria that you find significant.