Earth:Island country

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Short description: State with territory consisting of islands
"Island nation" redirects here. For the Taiwanese TV series, see Island Nation.
For a more comprehensive list, see Earth:List of island countries.
Not to be confused with Iceland.
Sovereign states and a de facto state (Taiwan) fully on islands: those with land borders shaded green, and those without shaded blue.

Countries/territories not shown on the map include the continents of Antarctica and Australia and autonomous areas.

An island country, island state, or island nation is a country whose primary territory consists of one or more islands or parts of islands.[1] Approximately 25% of all independent countries are island countries.[2] Island countries are historically more stable[2] than many continental states but are vulnerable to conquest by naval superpowers. Indonesia is the largest and most populated island country in the world (and the fourth most populated country overall).[3][4]

There are great variations between island country economies: they may rely mainly on extractive industries, such as mining, fishing and agriculture, and/or on services such as transit hubs, tourism, and financial services. Many islands have low-lying geographies and their economies and population centers develop along coast plains and ports; such states may be vulnerable to the effects of climate change, especially sea level rise .

Remote or significant islands and archipelagos that are not themselves sovereign are often known as dependencies or overseas territories.

History

Prehistory

Early settlements and indigenous populations

Many island countries were first inhabited by indigenous peoples who mastered long-distance ocean navigation and maritime skills. The Polynesians are one of the most notable groups; they used advanced wayfinding techniques to colonize vast areas of the Pacific Ocean, including islands such as Samoa, Tonga, New Zealand, and Hawaii. These migrations occurred over centuries, showcasing remarkable seafaring capabilities in pre-modern times.[5] Similarly, Madagascar's population is the result of early maritime migrations from both Southeast Asia and East Africa, resulting in a unique cultural and genetic blend that reflects the island's strategic location in the Indian Ocean trade routes.[6]

Modern times

Colonial era and European exploration

The Age of Discovery in the 15th century brought European explorers to many island regions, including the Caribbean, Pacific, and Indian Oceans. European powers, primarily Spain, Portugal, Britain, France, and the Netherlands, established colonies to exploit resources and secure strategic naval positions. Islands in the Caribbean became key centers for sugar plantations, which relied heavily on enslaved labor, significantly altering local demographics and economies.[7] Colonization also introduced new crops, animals, and cultural influences, but frequently led to displacement and decline of indigenous populations.

Independence movements and modern nationhood

In the 20th century, many island territories began asserting their sovereignty amid the global wave of decolonization. Countries such as Jamaica (independence in 1962) and Mauritius (1968) transitioned from colonial rule to independent states. These nations often faced unique challenges due to their geographic isolation, limited landmass, and economies dependent on a narrow range of exports like sugar, tourism, or minerals.[8] Meanwhile, Singapore evolved from a British colonial trading post into a major global financial and technological hub, demonstrating how strategic policy and geographic position can transform an island economy despite scarce natural resources.[9]

20th century

Geopolitical and environmental challenges

Many island countries, especially Small Island Developing States (SIDS) such as the Maldives and Tuvalu, face acute environmental challenges, notably rising sea levels, coastal erosion, and increased frequency of extreme weather events. These factors threaten their very existence, impacting freshwater supplies, infrastructure, and biodiversity.[10] Consequently, island nations have become vocal advocates for ambitious global climate action, emphasizing the urgency of reducing greenhouse gas emissions and supporting climate resilience efforts.[11]

In addition to environmental pressures, many island states navigate complex geopolitical dynamics due to their strategic maritime locations. They often maintain critical partnerships with regional powers and international organizations to enhance security, economic development, and disaster preparedness.[12] Balancing sovereignty and collaboration, these countries work to secure sustainable development pathways while managing vulnerabilities associated with their size and location.

Politics

Historically, island countries have tended to be less prone to political instability than their continental counterparts. The percentage of island countries that are democratic is higher than that of continental countries.[2]

Island territories

While island countries by definition are sovereign states, there are also several islands and archipelagos around the world that operate semi-autonomously from their official sovereign states. These are often known as dependencies or overseas territories and can be similar in nature to proper island countries.

War

Island countries have often been the basis of maritime conquest and historical rivalry between other countries.[13] Island countries are more susceptible to attack by large, continental countries due to their size and dependence on sea and air lines of communication.[14] Many island countries are also vulnerable to predation by mercenaries and other foreign invaders,[15] although their isolation also makes them a difficult target.

Natural resources

Many developing small island countries rely heavily on fish for their main supply of food.[16] Some are turning to renewable energy—such as wind power, solar power, hydropower, geothermal power, and biomass.[17]

Geography

Some island countries are more affected than other countries by climate change, which produces problems such as reduced land use, water scarcity, and sometimes even resettlement issues. Some low-lying island countries are slowly being submerged by the rising water levels of the Pacific Ocean.[18] Climate change also impacts island countries by causing natural disasters such as tropical cyclones, hurricanes, flash floods and droughts.[19]

Climate change

This section is an excerpt from Effects of climate change on island nations[ edit ]

Economics

Japan is an archipelago in Asia that constitutes one of the richest and most populated nations on Earth.
Singapore, an affluent and highly developed sovereign island country by which its territories consists of a main island and other smaller islands

Many island countries rely heavily on imports and are greatly affected by changes in the global economy.[20] Due to the nature of island countries their economies are often characterised by being smaller, relatively isolated from world trade and economy, more vulnerable to shipping costs, and more likely to suffer environmental damage to infrastructure; exceptions include Japan, Taiwan and the United Kingdom.[21][22][23] The dominant industry for many island countries is tourism.[24]

Composition

Island countries are typically small with low populations, although some, like Indonesia, Japan, and the Philippines are notable exceptions.[25]

Some island countries are centred on one or two major islands, such as Bahrain, Cuba, Iceland, Malta, New Zealand, Singapore, Sri Lanka, Taiwan, Trinidad and Tobago, and the United Kingdom. Others are spread out over hundreds or thousands of smaller islands, such as The Bahamas, Indonesia, Japan, the Maldives, the Philippines, and Seychelles. Some island countries share one or more of their islands with other countries, such as Ireland and the United Kingdom; the Dominican Republic and Haiti; and Indonesia, which shares islands with Brunei, Timor-Leste, Malaysia, and Papua New Guinea. Bahrain, Singapore, and the United Kingdom have fixed links such as bridges and tunnels to the continental landmass: Bahrain is linked to Saudi Arabia by the King Fahd Causeway, Singapore to Malaysia by the Johor–Singapore Causeway and Second Link, and the United Kingdom has a railway connection to France through the Channel Tunnel.

Geographically, the country of Australia is considered a continental landmass rather than an island, covering the largest landmass of the Australian continent. In the past, however, it was considered an island country for tourism purposes[26] (among others) and is sometimes referred to as such.[27]

See also

  • Archipelagic state
  • Effects of climate change on island nations
  • Landlocked country
  • List of Caribbean island countries by population
  • List of island countries
  • List of islands by area
  • List of islands by country
  • List of sovereign states and dependent territories in Oceania
  • List of sovereign states and dependent territories in the Indian Ocean
  • Microstate
  • City state
  • Pacific Islands Forum
  • Small Island Developing States
  • Thalassocracy

References

  1. ↑ "Island nation | Definition, meaning & more | Collins Dictionary" (in en). https://www.collinsdictionary.com/dictionary/english/island-nation. 
  2. ↑ 2.0 2.1 2.2 Ott, Dan (1996). Small is Democratic. Routledge. p. 128. ISBN 0-8153-3910-0. https://books.google.com/books?id=JOqZ9eOeRXoC&pg=PA128. Retrieved March 23, 2019. 
  3. ↑ Chepkemoi, Joyce (April 25, 2017). "Which Are The Island Countries Of The World?". WorldAtlas.com. https://www.worldatlas.com/articles/which-are-the-island-countries-of-the-world.html. 
  4. ↑ "Population, total 2015-2019". World Bank Open Data. https://data.worldbank.org/indicator/SP.POP.TOTL?end=2019&name_desc=false&start=2015&view=chart. 
  5. ↑ "Polynesian people". Encyclopaedia Britannica. https://www.britannica.com/topic/Polynesian-people. Retrieved 2025-05-25. 
  6. ↑ "Madagascar: People". Encyclopaedia Britannica. https://www.britannica.com/place/Madagascar/People. Retrieved 2025-05-25. 
  7. ↑ "Age of Discovery". Encyclopaedia Britannica. https://www.britannica.com/topic/European-exploration/The-Age-of-Discovery. Retrieved 2025-05-25. 
  8. ↑ "World Economic Situation and Prospects 2021". United Nations. https://www.un.org/development/desa/dpad/publication/world-economic-situation-and-prospects-2021/. Retrieved 2025-05-25. 
  9. ↑ "Singapore and the IMF". International Monetary Fund. https://www.imf.org/en/Countries/SGP. Retrieved 2025-05-25. 
  10. ↑ "IPCC Sixth Assessment Report: Impacts, Adaptation and Vulnerability". Intergovernmental Panel on Climate Change. https://www.ipcc.ch/report/ar6/wg2/. Retrieved 2025-05-25. 
  11. ↑ "Small Island Developing States and Climate Change". United Nations Framework Convention on Climate Change. https://unfccc.int/climate-action/sids. Retrieved 2025-05-25. 
  12. ↑ Kaira Vartak (2022-12-15). "The Small Island Developing States in IOR: Challenges and opportunities". Carnegie Endowment for International Peace. https://www.orfonline.org/expert-speak/the-small-island-developing-states-in-ior. Retrieved 2025-05-25. 
  13. ↑ Chasle, Raymond (1 Oct 1986). "The quest for identity. (island countries)". UNESCO Courier. http://www.accessmylibrary.com/coms2/summary_0286-9197350_ITM. 
  14. ↑ Perry, Walt L.; Robert W. Button; Jerome Bracken; Thomas Sullivan; Rand Corporation; United States Navy; Jonathan Mitchell (2002). Measures of Effectiveness for the Information-age Navy. Rand Corporation. pp. 7. ISBN 0-8330-3139-2. https://books.google.com/books?id=VwI0WLby3WoC&q=%22island+country%22&pg=PA7. Retrieved 2020-11-01. 
  15. ↑ WREN, CHRISTOPHER S. (December 9, 1989). "Mercenary Holding Island Nation Seeks Deal". The New York Times. https://query.nytimes.com/gst/fullpage.html?res=950DE3DB173CF93AA35751C1A96F948260. 
  16. ↑ "Many of the world's poorest people depend on fish". Food and Agriculture Organization of the United Nations. 2005-06-07. http://www.fao.org/Newsroom/en/news/2005/102911/index.html. 
  17. ↑ Xingwei, Huang (2008-10-17). "Pacific Islands countries switch to renewable energy source due to increasing fuel prices". http://news.xinhuanet.com/english/2008-10/17/content_10210370.htm. 
  18. ↑ "Leader of disappearing island nation says climate change an issue of survival, not economics". June 5, 2008. http://www.iht.com/articles/ap/2008/06/05/asia/AS-GEN-New-Zealand-World-Environment-Day.php. 
  19. ↑ "FAO: Climate change threatens food security of Pacific island countries". December 2, 2008. http://english.people.com.cn/90001/90777/90856/6544815.html. 
  20. ↑ "Hardship and Vulnerability in the Pacific Island Countries". The World Bank Group. 27 March 2014. https://www.worldbank.org/en/news/feature/2014/03/27/hardship-and-vulnerability-in-the-pacific-island-countries. 
  21. ↑ "WTO/FORSEC Trade Policy Course for Pacific island countries". 9 March 2001. http://www.wto.org/english/news_e/news01_e/fiji_e.htm. 
  22. ↑ "NZ calls for global solutions to problems faced by small island nations". 2005-01-18. http://news.xinhuanet.com/english/2005-01/18/content_2475179.htm. 
  23. ↑ Garg, Sarika. "U.N. ambassador gives keynote". http://www.thedp.com/article/1994/04/u.n._ambassador_gives_keynote. 
  24. ↑ "China enlists Pacific island countries as tourist destinations, XINHUA.". The America's Intelligence Wire. 10 August 2004. http://www.accessmylibrary.com/coms2/summary_0286-12915601_ITM. 
  25. ↑ "Wen pledges new aid to Pacific countries". International Herald Tribune. April 5, 2006. http://www.iht.com/articles/2006/04/05/news/pacific.php. 
  26. ↑ "Australian Naval Defence". The Brisbane Courier. 24 July 1897. http://trove.nla.gov.au/newspaper/article/3655029. 
  27. ↑ "China, Pacific island countries discuss cooperation at forum meeting". http://english.people.com.cn/200604/05/eng20060405_256086.html. 


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