what are some features geographers can use to define a region?
A region can be either a cultural, political, or physical region. Cultural regions may be defined by language or religion. Political regions are defined by boundaries of states, provinces, or national governments. Physical regions may be defined by lakes, rivers, deserts or mountains.
Check these sites for more information.
http://www.nationalgeographic.com/resources/ngo/education/themes.html
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