Borders

Borders are generally defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders can be established through warfare, colonization, or mutual agreements between the political entities that reside in those areas.

coastal waters that are part of a nation-state's sovereign territory

country located between two other mutually hostile countries

administrative territorial entity

place, generally between two countries, where travellers or goods are generally inspected

retail outlets that are exempt from the payment of certain local or national taxes and duties

intermediate region, typically between belligerent entities

international law term meaning territory which has never been the subject of a sovereign nation

measures taken to regulate the movement of goods and people across borders

geopolitical border, often agreed upon as part of an armistice or ceasefire

wartime principle in international law

military post

Carolingian border between Saxons and Slavs

wall or barrier at national boundaries

thumb|Obstacle to traffic caused by the Ferguson landslide in the state of [[California (USA)]] An obstacle (also called a barrier, impediment, or stumbling block) is an object, thing, action or situation that causes an obstruction. A obstacle blocks or hinders our way forward. Different types of obstacles include physical, economic, biopsychosocial, cultural, political, technological and military.

political borders corresponding to geographical barriers

global geographic limits

outpost maintained by a sovereign state on its border, usually one of a series placed at regular intervals, to watch over and safeguard its border with a neighboring state

division of a territory

purchasing goods across country's borders

boundary line marking the division of Metropolitan France into Nazi Germany-occupied France and Vichy France during World War II

drawing the boundaries of states and counties over territory

town or city on a border between larger political areas

place where one may lawfully enter a country

limits of the Earth's oceanic waters

Survey line involved in the Guyana–Venezuela territorial dispute

territory situated on a border or frontier

type of wall separating peoples, administrative units or cultures

weakly protected section of a national border, often covered in vegetation

legal concept in maritime boundary claims

legal limit of an immovable real estate property

policies intended to encourage trade between nations

principle of international law which provides that newly formed sovereign states should have the same borders that their preceding dependent area had before their independence

defined boundary or border of a city

cross-border traffic of residents of a border area

concept in border studies