• border
  • The dividing line or frontier between political or geographic regions.
Abstract from DBPedia
    Borders are geographic boundaries, imposed either by geographic features such as oceans, or by arbitrary groupings of political entities such as governments, sovereign states, federated states, and other subnational entities. Borders are established through warfare, colonization, or simple symbiotic agreements between the political entities that reside in those areas; the creation of these agreements is called boundary delimitation. Some borders—such as most states' internal administrative borders, or inter-state borders within the Schengen Area—are open and completely unguarded. Most external borders are partially or fully controlled, and may be crossed legally only at designated border checkpoints; adjacent border zones may also be controlled. Borders may even foster the setting up of buffer zones. A difference has also been established in academic scholarship between border and frontier, the latter denoting a state of mind rather than state boundaries.

    国境(こっきょう)とは、国家の領域の境目、境界のことである。 地球は絶対的空間の広がりとして連続しており、自然地理学的な障害を別にすれば、本来人間や物体の自由な移動を許容するものである。古来より、国家領域の周囲はフロンティアとして曖昧にされていたが、1648年のヴェストファーレン条約以降、主権国家は明確な領域を持つこととされ、地球の連続的な広がりを有界化して、バウンダリーとしての国境線が地表上にひかれることとなった。