The American continents consist of two main landmasses: North America and South America. North America includes countries like the United States, Canada, and Mexico, while South America features nations such as Brazil, Argentina, and Chile. These continents are separated by the Panama Canal and are connected by the Isthmus of Panama. Both continents are rich in diverse landscapes, including mountains, forests, and deserts. The Rocky Mountains in North America and the Andes in South America are notable mountain ranges. Additionally, the Americas are home to various ecosystems, from the Amazon Rainforest to the Great Plains.