The largest country in South America is Brazil, which covers approximately 47.3% of the continent. Brazil is renowned for its vast size, biodiversity, and cultural diversity. It is home to the majority of the Amazon rainforest, which plays a critical role in the global ecosystem and climate regulation. Furthermore, Brazil boasts famous cultural contributions such as Rio de Janeiro's Carnival and its rich musical heritage. The country's economy is one of the largest in the world, largely driven by agriculture, mining, and services, making it a pivotal player in both the regional and global economy.