Final answer:
Regions differ from states or countries in that they have a unified character determined by cultural, economic, and physical features rather than formal political boundaries. Regions can be formal, functional, or perceptual and are identified by shared traits.
Step-by-step explanation:
What distinguishes regions from other types of places, like states or countries, is that regions have a unified character in terms of culture, economy, and physical features. Unlike states or countries, which are political units with clear formal boundaries, regions can be more fluid and are classified based on shared attributes such as climate, vegetation, language, trade networks, religion, or other human and physical factors. For example, regions can be formal, functional, or perceptual, and their delineation is often related to the characteristic(s) they represent. Formal regions have homogenous features across their territory, like the "Mormon Region" in the United States, known for its predominant religion. Delineating regions on maps is essential, as it helps geographers understand trends, identify patterns, or explain phenomena.