How many European nations made explorations of north and south America?

Several European nations undertook explorations of North and South America, with the most notable being Spain, Portugal, England, France, and the Netherlands. Spain and Portugal were the earliest explorers, driven by the Treaty of Tordesillas in 1494. England and France followed in the 16th and 17th centuries, establishing colonies and trade routes. The Netherlands also participated, particularly in the early 17th century, focusing on areas like present-day New York.