National borders

National borders are defined lines that separate one country from another. They can follow physical features like rivers or mountains or be drawn arbitrarily on maps. These borders are important for governance, trade, and security, as they determine where a nation's laws and regulations apply. People living near borders often interact with neighboring countries, which can lead to cultural exchanges or tensions. National borders can change due to treaties, conflicts, or diplomatic negotiations, reflecting the dynamic nature of international relations. Overall, they play a crucial role in shaping political and social landscapes worldwide.