Answer:
The 1493 stop at Puerto Rico you're referring to is associated with Christopher Columbus. Columbus's arrival in Puerto Rico during his second voyage to the Americas is part of the larger exploration of the Caribbean islands. While Columbus is often credited with the "discovery" of America by Europeans, it's important to note that he never actually set foot on the mainland of what is now the United States. Instead, his voyages led to the first sustained European contact with the Caribbean and the Americas. The concept of "discovering America" often refers to the broader European exploration of the New World, not just the present-day United States.