Boundary line between two territories, for example countries, states, provinces, cities.
1
Russia and China flout political borders, just look at Crimea and Hong Kong.
2
Global crises like this pandemic observe no geographical or political borders.
3
More sophisticated conservation programs could be developed as more information on natural environments becomes available across political borders.
4
Rather, commuters move within megaregions-massiveblobs that center on major metropolitan areas, paying no mind to political borders.
5
Sir, - The current outbreak of foot-and-mouth disease in the UK highlights the fact that disease outbreaks do not respect political borders.