Borders, or boundaries, are defined lines that separate different areas, such as countries, states, or regions. They can be natural, like rivers and mountains, or artificial, created by human agreements or treaties. Borders help establish governance, control resources, and manage trade between different areas. In addition to political borders, there are also social and cultural boundaries that define groups within societies. These can include language, religion, and customs. Understanding borders is essential for studying geography, international relations, and cultural interactions, as they influence how people live and interact across different regions, such as Europe or North America.