Geographic regions are areas defined by specific characteristics, such as climate, culture, or physical features. These regions can be large, like continents, or smaller, like countries or states. They help us understand the diversity of the Earth's landscapes and the people who inhabit them. Regions can also be categorized based on economic activities, such as agricultural or industrial areas. For example, the Great Plains in the United States is known for its farming, while Silicon Valley is recognized for technology and innovation. Understanding these regions aids in studying human interactions with the environment.