Regions can be divided based on four main criteria:
1. Industry criterion divides regions according to different industries. For example, physical-geographical regions and socio-geographical regions.
2. Methodological criterion looks at the purpose of identifying a region, such as for research, management, or as an object of study.
3. Taxonomic criterion considers a region's geographical location and divides them into individual regions defined by unique characteristics and typological regions defined by common characteristics.
4. Form criterion is not described in the text.