Boundaries Foreign relations 4 History 4 Border security 2 Economic conditions 2 Economic history 2 Fronteras 2 History of the Americas 2 Human rights 2 International courts 2 International human rights courts 2 Access to the sea (International law) 1 Anthropogeography & Human Ecology 1 Anthropology 1 Arreglo pacífico de los conflictos internacionales 1 Borderlands 1 Colombia 1 Congresses 1 Diplomatic relations 1 Ecuador 1 Espacio 1 Frontier thesis 1 Geografía humana 1 Geopolitics 1 Government policy 1 History & Archaeology 1 Human territoriality 1 International economic integration 1 International relations 1 International status 1