Concept of a Region A region is an area on the earth’s surface which can be defined by one or more criteria - Leaving Cert Geography - Question C - 2011

An example of a region defined by climate is the Mediterranean Region. This region experiences hot, dry summers and mild, wet winters, which influence the types of vegetation and agriculture practiced there, such as vineyards and olive groves.

Regions can also be defined by other criteria such as culture, economy, or geography. For example, the cultural region of the Southern United States showcases distinct culinary traditions, music styles, and social customs that differentiate it from other regions. Similarly, economic regions can be defined based on industry, such as the Silicon Valley region, known for its tech-driven economy.

Thus, a region's definition can vary depending on the criteria selected, and multiple overlapping criteria can exist simultaneously, creating complex and varied landscapes across the earth's surface.