 International borders

International borders are defined lines that separate one country from another. They can be physical, such as rivers, mountains, or fences, or they can be invisible lines marked on maps. These borders are established through various means, including historical treaties, agreements between nations, or conflict. International borders serve several purposes, including: 1. **Sovereignty**: They delineate the jurisdiction and governance of different states, indicating where one nation's laws and regulations apply and where another's begin.