The largest country in South America is Brazil. Covering an area of approximately 8.5 million square kilometers, Brazil occupies nearly half of the continent and is bordered by every South American country except Chile and Ecuador. It boasts a diverse range of ecosystems, including the Amazon rainforest, which is one of the world's most biodiverse areas. Brazil's cultural heritage is equally rich, being known for its music, dance, and festivals, particularly the famous Carnival. The country's vast size supports a wide range of landscapes, climates, and wildlife, making it a vital part of South America's identity.