What impacts did the Columbus discovery of the western hemisphere have on the Americas and Europe?

Columbus's discovery of the Western Hemisphere in 1492 initiated significant cultural, economic, and social exchanges between the Americas and Europe, known as the Columbian Exchange. This led to the introduction of new crops and livestock to both continents, dramatically transforming diets and agricultural practices. However, it also resulted in devastating consequences for Indigenous populations, including widespread disease, colonization, and exploitation. Ultimately, this event marked the beginning of extensive European colonization and the transatlantic slave trade, reshaping the history of both regions.