National identity is a myth that built the modern world, shaping how individuals and societies perceive themselves. It involves a sense of belonging to a larger entity, typically a nation, and is often associated with borders, language, and race. rephrase as a 9th grader shorten

National identity is a made-up idea that helped shape the world we live in today and how people think of themselves and their communities. It means feeling like you're part of something bigger, usually a country, and is often connected to things like borders, language, and race.