The provided source discusses the historical significance surrounding Columbus Day and the observance of Día de la Raza across Central and South America. It highlights how these dates commemorate the initial meetings between European travelers and Native populations, which ultimately sparked the colonization of the Americas. Additionally, the text clarifies that while the famous 1492 expedition marked a major turning point, Columbus did not actually touch the mainland until his later journey in 1498. Finally, the article points out that Norse explorersarrived in North America centuries prior, proving that Columbus was not the very first European to reach the continent.