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Borders are geographic boundaries of political entities or legal jurisdictions, such as governments, sovereign states, federated states, and other subnational entities. Some borders—such as a state's internal administrative border, or inter-state borders within the Schengen Area—are open and completely unguarded. Other borders are partially or fully controlled, and may be crossed legally only at designated border checkpoints and border zones may be controlled. Mostly contentious, borders may even foster the setting up of buffer zones.

Border sections
Intro  Definitions  Classification of borders  Maritime borders  Border economics  Politics  Cross-border regions  Border studies  Image gallery  See also  References  Further reading  External links  

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