U.S. National Standards
N.NCSS. National Curriculum Standards for Social Studies (NCSS)
NCSS.3. PEOPLE, PLACES, AND ENVIRONMENTS
SOCIAL STUDIES PROGRAMS SHOULD INCLUDE EXPERIENCES THAT PROVIDE FOR THE STUDY OF PEOPLE, PLACES, AND ENVIRONMENTS.
3.1. KNOWLEDGE - Learners will understand:
3.1.5. The concept of regions identifies links between people in different locations according to specific criteria (e.g., physical, economic, social, cultural, or religious).