National sovereignty refers to the authority of a state to govern itself without external interference. This means that a country has the power to make its own laws, control its resources, and manage its affairs independently. For example, a nation like France can decide its own policies on education, healthcare, and foreign relations without being dictated by other countries. Sovereignty is essential for maintaining a nation's identity and integrity. It allows countries to protect their culture, values, and interests. However, in a globalized world, nations often collaborate on issues like climate change and trade, which can sometimes challenge their sovereignty as they agree to shared rules and regulations.