Romantic nationalism is a type of nationalism that supports the idea of people from different countries being proud of their culture, music, language, and traditions. It is based on the idea that people in different countries should have a shared identity and bond with each other. People who believe in this kind of nationalism think that each country should have its own unique customs, traditions, and language, rather than having them all mixed together. This idea helps to bring people from different countries together and make them feel closer to each other.