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124-628: The Northeast region encompasses the provinces northeast of Hanoi , near the border with China. It has a population of about ten million. Geographical boundaries to the west of the Northeast are not clear, mainly due to the lack of consensus about the geography of Vietnam on the boundary between the Northwest and Northeast to be the Red River or the Hoàng Liên Sơn . The Northeast is limited to

248-451: A "commuting" distance to an island that has enough resources to be sustainable. The presence of an island is marked by seabirds , differences in cloud and weather patterns, as well as changes in the direction of waves. It is also possible for human populations to have gone extinct on islands, evidenced by explorers finding islands that show evidence of habitation but no life. Not all islands were or are inhabited by maritime cultures. In

372-514: A "rafting event". This phenomenon is known as oceanic dispersal . Tropical storms have the capacity to transport species over great distances. Animals like tortoises can live for weeks without food or water, and are able to survive floating on debris in the sea. One case study showed that in 1995, fifteen iguanas survived a 300 km journey to Anguilla in the Caribbean , an island which no iguana had lived on previously. They survived floating on

496-689: A construction boom. Skyscrapers, appearing in new urban areas, have dramatically changed the cityscape and have formed a modern skyline outside the old city. In 2015, Hanoi is ranked 39th by Emporis in the list of world cities with most skyscrapers over 100 m; its two tallest buildings are Hanoi Landmark 72 Tower (336 m, second tallest in Vietnam after Ho Chi Minh City's Landmark 81 and third tallest in south-east Asia after Malaysia's Petronas Towers ) and Hanoi Lotte Center (272 m, also, third tallest in Vietnam). Public outcry in opposition to

620-491: A continent. Oceanic islands can be formed from volcanic activity, grow into atolls from coral reefs , and form from sediment along shorelines, creating barrier islands . River islands can also form from sediment and debris in rivers. Artificial islands are those made by humans, including small rocky outcroppings built out of lagoons and large-scale land reclamation projects used for development. Islands are host to diverse plant and animal life. Oceanic islands have

744-426: A detailed review of 1,288 islands found that they were home to 1,189 highly-threatened vertebrate species, which was 41 percent of the global figure. Coral bleaching is expected to occur with more frequency, threatening marine ecosystems, some of which island economies are dependent on. Some islands that are low-lying may cease to exist given high enough amounts of sea level rise. Tuvalu received media attention for

868-491: A dry winter and large amount of sunshine. Spring, from March until the end of April, Hanoi is usually characterized with large amounts of drizzle and little sunshine due to the strong activity of the southeast monsoon blowing moisture from the sea inland. The city is usually cloudy and foggy in this time, averaging only 1.5 hours of sunshine per day in February and March. The city has times to be influenced by cold waves from

992-614: A few meters high, and are usually temporary. Changes in the flow speed, water level, and sediment content of the river may effect the rate of fluvial island formation and depletion. Permanent river islands also exist, the largest of which (that is completely inland) is Bananal Island in the Tocantins of Brazil, which has a maximum width of 55 kilometers. Lakes form for a variety of reasons, including glaciers , plate tectonics, and volcanism. Lake islands can form as part of these processes. The field of insular biogeography studies

1116-402: A higher carrying capacity also have more genetic diversity , which promotes speciation . Oceanic islands, ones that have never been connected to shore, are only populated by life that can cross the sea. This means that any animals present on the island had to have flown there, in the case of birds or bats , were carried by such animals, or were carried in a sea current in what is known as

1240-477: A loss of almost all the infrastructure in Dominica. Sea level rise and other climate changes can reduce freshwater reserves, resulting in droughts . These risks are expected to decrease the habitability of islands, especially small ones. Beyond risks to human life, plant and animal life are threatened. It has been estimated that almost 50 percent of land species threatened by extinction live on islands. In 2017,

1364-433: A major metropolitan area of Northern Vietnam, and also the country's cultural and political centre, putting a lot of pressure on the infrastructure, some of which is antiquated and dates back to the early 20th century. It has over eight million residents within the city proper and an estimated population of 20 million within the metropolitan area . The number of Hanoians who have settled down for more than three generations

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1488-403: A mass of uprooted trees from a storm. Plant species are thought to be able to travel great distances of ocean. New Zealand and Australia share 200 native plant species, despite being separated by 1500 km. Continental islands, islands that were at one point connected to a continent, are expected to share a common history of plant and animal life up until the point that the island broke away from

1612-535: A metropolis in present-day inner Hanoi. By the year 679, the Tang dynasty changed the region's name to Annan ( Chinese : 安南 ; Vietnamese : An Nam ; lit. 'pacified south'), with Songping as its capital. In the latter half of the eighth century, Zhang Boyi, a viceroy from the Tang dynasty , built Luocheng ( Chinese : 羅城 ; Vietnamese : La Thành ) to suppress popular uprisings. Luocheng extended from Thu Le to Quan Ngua in what

1736-837: A minimum. Some islands became host to humans due to a land bridge or a continental island splitting from the mainland. Today, up to 10% of the world's population lives on islands. Islands are popular targets for tourism due to their perceived natural beauty, isolation, and unique cultures. Islands became the target of colonization by Europeans, resulting in the majority of islands in the Pacific being put under European control. Decolonization has resulted in some but not all island nations becoming self-governing , with lasting effects related to industrialisation , invasive species , nuclear weapons testing , and tourism . Islands and island countries are threatened by climate change . Sea level rise threatens to submerge nations such as Maldives ,

1860-743: A minority. Cultural attitudes related to communal ownership of land as well as a lack of individualistic decision-making may make some island cultures less compatible with the global capitalist economy, causing these nations to experience less economic growth. Islands have long been a popular target for tourism , thanks to their unique climates, cultures, and natural beauty. However, islands may suffer from poor transportation connectivity from airplanes and boats and strains on infrastructure from tourist activity. Islands in colder climates often rely on seasonal tourists seeking to enjoy nature or local cultures, and may only be one aspect of an island's economy. In contrast, tourism on tropical islands can often make up

1984-508: A name still used poetically to this day. Thăng Long remained the capital of Đại Việt until 1397, when it was moved to Thanh Hóa , then known as Tây Đô (西都), the "Western Capital". Thăng Long then became Đông Đô (東都), the "Eastern Capital". In 1408, the Chinese Ming dynasty attacked and occupied Vietnam, changing Đông Đô's name to Dongguan ( Chinese : 東關 ; Vietnamese : Đông Quan ; lit. 'eastern gate'). In 1428,

2108-613: A permanent caisson , a steel or concrete structure built in a closed loop and then filled with sand. Some modern islands have been constructed by pouring millions of tons of sand into the sea, such as with Pearl Island in Qatar or the Palm Islands in Dubai. These islands are usually created for real estate development , and are sold for private ownership or construction of housing. Offshore oil platforms have also been described as

2232-524: A phenomenon where new oceanic crust is formed, pushing away older crust. Islands sitting on the continental shelf may be called continental islands. Other islands, like those that make up New Zealand , are what remains of continents that shrank and sunk beneath the sea. It was estimated that Zealandia , the continent-like area of crust that New Zealand sits on, has had 93% of its original surface area submerged. Some islands are formed when coral reefs grow on volcanic islands that have submerged beneath

2356-501: A pillar in Hanoi's economy, has striven to reform itself, introducing new high-yield plant varieties and livestock, and applying modern farming techniques. After the economic reforms that initiated economic growth, Hanoi's appearance has also changed significantly, especially in recent years. Infrastructure is constantly being upgraded, with new roads and an improved public transportation system. Hanoi has allowed many fast-food chains into

2480-423: A press conference publicizing the ongoing submerging of the island country. Tuvalu signed a cooperation agreement with Australia agreeing to annually allow 280 of its citizens to become permanent residents of Australia. The Marshall Islands, a country of 1,156 islands, have also been identified as a country that may be existentially threatened by rising seas. Increasing intensity of tropical storms also increases

2604-483: A priority target of conservation efforts, to prevent the extinction of these species. Despite high levels of endemism, the total species richness , the total number of unique species in a region, is lower on islands than on mainlands. The level of species richness on islands is proportional to the area of that island, a phenomenon known as the species-area relationship . This is because larger areas have more resources and thus can support more organisms. Populations with

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2728-411: A restricted set of natural resources. However, these nations control some of the largest fisheries in the world, deposits of copper , gold , and nickel , as well as oil deposits . The natural beauty of island nations also makes them a magnet for tourism . Islands also have geopolitical value for naval bases , weapons testing , and general territorial control. One such example is French Polynesia ,

2852-476: A selection pressure for smaller animals that require less food. Having fewer predators would mean these animals did not need not be large to survive. Charles Darwin formulated the theory of natural selection through the study of island ecology. The species he observed on the Galápagos Islands , including tanager birds, contributed to his understanding of how evolution works. He first traveled to

2976-509: A specific property known as adaptive radiation . In this process, a species that arrives on a group of islands rapidly becomes more diverse over time, splitting off into new species or subspecies. A species that reaches an island ecosystem may face little competition for resources, or may find that the resources that they found in their previous habitat are not available. These factors together result in individual evolutionary branches with different means of survival. The classical example of this

3100-414: A territory that receives substantial military expenditure and aid from France. Since the first discoveries of Polynesian, Micronesian , and other islands by Westerners, these nations have been the subject of colonization. Islands were the target of Christian missionaries . These missionaries faced resistance, but found success when some local chiefs used European support to centralize power. Beginning in

3224-519: A tree that is present in Australia, New Zealand, parts of South American, and New Guinea, places that today are geographically distant. A possible explanation for this phenomenon is that these landmasses were once all part of the continent Gondwana and separated by tectonic drift. However, there are competing theories that suggest this species may have reached faraway places by way of oceanic dispersal. Species that colonize island archipelagos exhibit

3348-616: A type of island. Some atolls have been covered in concrete to create artificial islands for military purposes, such as those created by China in the South China Sea . These atolls were previously low-tide elevations, landmasses that are only above water during low tide . The United Nations Convention on the Law of the Sea indicates that these islands may not have the same legal status as a naturally occurring island, and as such may not confer

3472-587: A wealthy aristocratic family of Lac ethnicity in Mê Linh district (Hanoi), led the locals to rise up in rebellion against the Han. It began at the Red River Delta , but quickly spread both south and north from Jiaozhi, stirring up all three Lạc Việt regions and most of Lingnan, gaining the support of about 65 towns and settlements. Trưng sisters then established their court upriver in Mê Linh. In 42 AD,

3596-515: Is Darwin's finches , a group of up to fifteen tanager species that are endemic to the Galápagos Islands. These birds evolved different beaks in order to eat different kinds of food available on the islands. The large ground finch has a large bill used to crack seeds and eat fruit. The Genovesa cactus finch prefers cacti as a food source, and has a beak adapted for removing pulp and flowers from cacti. The green warbler-finch (in

3720-531: Is 23.6 °C (74 °F), with a mean relative humidity of more than 80%. The coldest month has a mean temperature of 16.4 °C (61.5 °F) and the hottest month has a mean temperature of 29.2 °C (84.6 °F). The highest recorded temperature was 42.8 °C (109 °F) in May 1926, while the lowest recorded temperature was 2.7 °C (37 °F) on 12 January 1955. The city have also experienced extremely hot weather on 4 June 2017 due to La Niña , with

3844-467: Is 4,091,353 people, accounting for 50.8%. Hanoi is the second most populous city in the country, after Ho Chi Minh City (8,993,082 people). The average annual population growth rate from 2009 to 2019 of Hanoi is 2.22%/year, higher than the national growth rate (1.14%/year) and is the second highest in the Red River Delta, only after Bắc Ninh Province (2.90% / year). Nowadays, the city is both

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3968-598: Is actually a cognate of Swedish ö and German Aue , and more distantly related to Latin aqua (water). The spelling of the word was modified in the 15th century because of a false etymology caused by an association with the Old French loanword isle , which itself comes from the Latin word insula . Islands often are found in archipelagos or island chains, which are collections of islands. These chains are thought to form from volcanic hotspots , areas of

4092-426: Is characterized by hot and humid weather with abundant rainfall, and few dry days. Hot, dry conditions caused by westerly winds during summer are rare. From October to November comprise the fall season, characterized by a decrease in temperature and precipitation, this time in the year mostly are warm and mild. Winters, from December to February, are characterized as being cool by the northeast monsoon, giving Hanoi

4216-471: Is constructed, known to history as Cổ Loa , the first political center of the Vietnamese civilization pre-Sinitic era, with an outer embankment covering 600 hectares . In 179 BC, the Âu Lạc Kingdom was annexed by Nanyue , which ushered in more than a thousand years of Chinese domination. Zhao Tuo subsequently incorporated the regions into his Nanyue domain, but left the indigenous chiefs in control of

4340-459: Is demoted to a district-level town. They are further subdivided into 22 commune-level towns (or townlets), 399 communes, and 145 wards. – formerly an administrative subdivision unit of the defunct Hà Tây Province. During the French colonial period, as the capital of French Indochina , Hanoi attracted a considerable number of French, Chinese and Vietnamese from the surrounding areas. In the 1940s

4464-467: Is likely to be very small when compared to the overall population of the city. Even in the Old Quarter , where commerce started hundreds of years ago and consisted mostly of family businesses, many of the street-front stores nowadays are owned by merchants and retailers from other provinces. The original owner family may have either rented out the store and moved into the adjoining house or moved out of

4588-510: Is now Ba Đình district . Over time, in the first half of the ninth century, this fortification was expanded and renamed as Jincheng ( Vietnamese : Kim Thành ). In 863, the kingdom of Nanzhao , as well as local rebels, laid siege of Jincheng and defeated the Chinese armies of 150,000. In 866, Chinese jiedushi Gao Pian recaptured the city and drove out the Nanzhao and rebels. He renamed

4712-615: Is planned to be built to expand public transport and link the Hanoi to surrounding areas. Projects such as airport upgrading, a golf course, and cultural villages have been approved for development by the government. In the late 1980s, the United Nations Development Programme (UNDP) and the Vietnamese government had designed a project to develop rural infrastructure. The project focused on improving roads, water supply and sanitation, and educational, health and social facilities because economic development in

4836-503: Is the apple snail , initially introduced to the U.S. by aquarium owners. It has since been transported by hurricanes across the Gulf Coast and neighboring islands. These species compete for resources with native animals, and some may grow so densely that they displace other forms of existing life. For hundreds of years, islands have been created through land reclamation . One of the first recorded instances of this when people of

4960-461: Is the capital and second-most populous city of Vietnam . The name "Hanoi" translates to "inside the river," – Hanoi is bordered by the Red and Black Rivers . As a municipality , Hanoi consists of 12 urban districts , 17 rural districts , and one district-level town . The city encompasses an area of 3,359.84 km (1,297.24 sq mi) and as of 2023, a population of 8,587,100. Hanoi had

5084-634: Is the giant tortoise of the Seychelles , though it is unknown if it grew in size before or after reaching the island. Larger animals such as the hippopotamus tend to become smaller, such as in the case of the pygmy hippopotamus . This is known as insular dwarfism . In the case of smaller animals, it has been hypothesized that animals on islands may have fewer predators and competitors, resulting in selection pressure towards larger animals. Larger animals may exhaust food resources quickly due to their size, causing malnutrition in their young, resulting in

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5208-467: Is the edge of the Yunnan Plateau . The high mountains of the Northeast are concentrated here, as Tây Côn Lĩnh , Kiêu Liêu Ti . The northern part junction with Vietnam-China border are the plateau ( highland ) turns from west to east are: Bắc Hà , Quản Bạ , Đồng Văn . Two first plateau has an average elevation of 1000-1200 m . Đồng Văn Plateau is 1600m. Rivers and streams flowing through

5332-542: The Atlantic Ocean in search of an alternate route to the East Indies . These historians theorize that successful explorers were rewarded with recognition and wealth, leading others to attempt possibly dangerous expeditions to discover more islands, usually with poor results. About 10% of the world's population lives on islands. The study of the culture of islands is known as island studies . The interest in

5456-708: The Democratic Republic of Vietnam (DRV) when Ho Chi Minh proclaimed the independence of Vietnam on 2 September 1945. However, the French returned and reoccupied the city in February 1947. On 8 March 1949, Hanoi became under the control of the State of Vietnam (created by the Élysée Accords ), an associated state within the French Union . This state gained independence with the Matignon Accords on 4 June 1954. After nine years of fighting between

5580-610: The Lam Sơn uprising , under the leadership of Lê Lợi , overthrew the Chinese rule. Lê Lợi founded the Lê dynasty and renamed Đông Quan to Đông Kinh (東京) or Tonkin . During 17th century, the population of Đông Kinh was estimated by Western diplomats as about 100,000. Right after the end of the Tây Sơn dynasty , it was named Bắc Thành (北城). When the Nguyễn dynasty was established in 1802, Gia Long moved

5704-577: The Marshall Islands , and Tuvalu completely. Increases in the frequency and intensity of tropical cyclones can cause widespread destruction of infrastructure and animal habitats. Species that live exclusively on islands are some of those most threatened by extinction . An island is an area of land surrounded by water on all sides that is distinct from a continent. There is no standard of size that distinguishes islands and continents . Continents have an accepted geological definition – they are

5828-507: The Polynesians . Many of the previous island settlements required traveling distances of less than 100 km (62 mi), whereas Polynesians may have traveled 2,000–3,200 km (1,200–2,000 mi) to settle islands such as Tahiti . They would send navigators to sail the ocean without the aid of navigational instruments to discover new islands for settlement. Between 1100 and 800 BC, Polynesians sailed East from New Guinea and

5952-891: The Solomon Islands and reached the islands that make up the modern-day Fiji and Samoa . The furthest extent of this migration would be Easter Island in the East, and New Zealand in the South, with New Zealand's first settlements between 1250 and 1300. Historians have sought to understand why some remote islands have always been uninhabited, while others, especially in the Pacific Ocean , have long been populated by humans. Generally, larger islands are more likely to be able to sustain humans and thus are more likely to have been settled. Small islands that cannot sustain populations on their own can still be habitable if they are within

6076-499: The Solomon Islands created eighty such islands by piling coral and rock in the Lau Lagoon . One traditional way of constructing islands is with the use of a revetment . Sandbags or stones are dropped with a barge into the sea to bring the land level slightly out of the water. The island area is then filled with sand or gravel, followed by a construction of this revetment to hold it together. Islands have also been constructed with

6200-588: The Soviet Union and Vietnam led to the creation of the first comprehensive plan for Hanoi with the assistance of Soviet planners between 1981 and 1984. It was never realized because it appeared to be incompatible with Hanoi's existing layout. In recent years, two master plans have been created to guide Hanoi's development. The first was the Hanoi Master Plan 1990–2010, approved in April 1992. It

6324-613: The Tang dynasty due to the ransacking of Guangzhou by the Huang Chao rebellion. By early tenth century AD, modern-day Hanoi was known to the Muslim traders as Luqin . In 1010, Lý Thái Tổ , the first ruler of the Lý dynasty , moved the capital of Đại Việt to the site of the Đại La Citadel. Claiming to have seen a dragon ascending the Red River, he renamed the site Thăng Long (昇龍) –

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6448-568: The Thanh Trì District . The result of the land-use pattern was meant to resemble a five cornered star by 2010. In 1998, a revised version of the Hanoi Master plan was approved to be completed in 2020. It addressed the significant increase of population projections within Hanoi. Population densities and high rise buildings in the inner city were planned to be limited to protect the old parts of inner Hanoi. A rail transport system

6572-494: The communes and rural areas surrounding Hanoi is dependent on the infrastructural links between the rural and urban areas, especially for the sale of rural products. The project aimed to use locally available resources and knowledge such as compressed earth construction techniques for building. It was jointly funded by the UNDP , the Vietnamese government, and resources raised by the local communities and governments. In four communes,

6696-414: The lithosphere where the mantle is hotter than the surrounding area. These hotspots would give rise to volcanoes whose lava would form the rock the islands are made of. For some islands, the movement of tectonic plates above stationary hotspots would form islands in a linear chain, with the islands further away from the hotspot being progressively older and more eroded , before disappearing under

6820-450: The sea as a natural barrier to the introduction of new species, causing the species that do reach the island to evolve in isolation. Continental islands share animal and plant life with the continent they split from. Depending on how long ago the continental island formed, the life on that island may have diverged greatly from the mainland due to natural selection . Humans have lived on and traveled between islands for thousands of years at

6944-537: The 16th century, European states placed most of Oceania in under colonial administration . Pohnpei was colonized by Spain as early as 1526. It changed hands from Germany to Japan to the United States before joining the Federated States of Micronesia in 1982, maintaining a "free association" status with the U.S. Guam was a Spanish territory until 1898, and now is a unincorporated territory of

7068-753: The Chinese coast through the Strait of Malacca towards the southern tip of India to Mombasa , from there through the Red Sea via the Suez Canal to the Mediterranean , there to the Upper Adriatic region to the northern Italian hub of Trieste with its rail connections to Central Europe and the North Sea . On Vietnam's Provincial Competitiveness Index 2023, a key tool for evaluating

7192-701: The Enterprise Law (as of 3/2007). Trade is another strong sector of the city. In 2003, Hanoi had 2,000 businesses engaged in foreign trade, having established ties with 161 countries and territories. The city's export value grew by an average 11.6 percent each year from 1996 to 2000 and 9.1 percent during 2001–2003. The economic structure also underwent important shifts, with tourism, finance, and banking now playing an increasingly important role. Hanoi's traditional business districts are Hoàn Kiếm , Hai Bà Trưng and Đống Đa ; and newly developing Cầu Giấy , Nam Từ Liêm , Bắc Từ Liêm , Thanh Xuân and Hà Đông in

7316-691: The French and DRV forces, Hanoi became the capital of North Vietnam when this territory became a sovereign country on 21 July 1954. The army of the French Union withdrew that year and the People's Army of Vietnam of the DRV and International Control Commission occupied the city on 10 October the same year under the terms of the 1954 Geneva Conference . During the Vietnam War between North and South (1955-1975), Hanoi and North Vietnam were attacked by

7440-458: The Han emperor commissioned general Ma Yuan to suppress the uprising with 32,000 men, including 20,000 regulars and 12,000 regional auxiliaries. The rebellion was defeated in the next year as Ma Yuan captured and decapitated Trưng Trắc and Trưng Nhị, then sent their heads to the Han court in Luoyang . By the middle of the fifth century, in the center of ancient Hanoi, a fortified settlement

7564-511: The Hawaiian islands being home to irrigated fields of taro, whereas in some islands, like Tahiti, breadfruit was more widely cultivated and fermented in order to preserve it. There is archeological evidence that Canary Islanders would chew the roots of ferns for sustenance, a practice that wore heavily on their molars . These islanders would also grow barley and raised livestock such as goats . Many island nations have little land and

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7688-492: The Northeast originating from the Siberian High . Hanoi is the only capital of Southeast Asia with a subtropical climate . The region has a positive water balance (i.e. the precipitation exceeds the potential evapotranspiration ). Hanoi averages 1,612 millimetres (63.5 in) of rainfall per year, the majority falling from May to October. There are an average of 114 days with rain. The average annual temperature

7812-682: The Origin of Species . The first evidence of humans colonizing islands probably occurred in the Paleolithic era, 100,000 to 200,000 years ago. Reaching the Indonesian islands of Flores and Timor would have required crossing distances of water of at least 29 km (18 mi). Some islands, such as Honshu , were probably connected to the mainland with a land bridge that allowed humans to colonize it before it became an island. The first people to colonize distant oceanic islands were

7936-481: The U.S. The decolonization era saw many island states achieve independence or some form of self-governance . Nuclear weapons testing on the Marshall Islands left many atolls destroyed or uninhabitable, causing the forced displacement of people from their home islands as well as increases in cancer rates due to radiation . Colonization has resulted in a decline of observance of traditional cultural practices in places such as Hawaii, where Native Hawaiians are now

8060-559: The United States and South Vietnamese Air Forces. Following the end of the war with the fall of Saigon , Hanoi became the capital of the Socialist Republic of Vietnam when North and South Vietnam were reunited on 2 July 1976. On 21 December 1978, the National Assembly of Vietnam approved a law to expand Hanoi's borders, absorbing the districts of Ba Vì , Thạch Thất , Phúc Thọ , Đan Phượng , Hoài Đức , and

8184-457: The absence of Neolithic sites across most of the Bac Bo region. Consequently, from about 10,000 to approximately 4,000 years ago, Hanoi in general was completely underwater. It is believed that the region has been continuously inhabited for the last 4,000 years. In around third century BC, An Dương Vương established the capital of Âu Lạc north of present-day Hanoi, where a fortified citadel

8308-523: The business environment in Vietnam’s provinces, Hanoi received a score of 67.15. This was an improvement from 2022 in which the province received a score of 66.74. In 2023, the province received its highest scores on the 'Labor Policy' and 'Time Costs' criterion and lowest on 'Access To Land' and 'Proactivity'. A development master plan for Hanoi was designed by Ernest Hebrard in 1924, but was only partially implemented. The previous close relationship between

8432-502: The capital of French Indochina from 1902 to 1945. After the August Revolution , the Democratic Republic of Vietnam designated Hanoi as the capital of the newly independent country. In 2008, Hà Tây Province and two other rural districts were annexed into Hanoi, almost tripling Hanoi's area. Hanoi is the cultural, economic and education center of Northern Vietnam . As the country's capital, it hosts 78 foreign embassies ,

8556-504: The capital to Huế . Thăng Long was no longer the capital, and its chữ Hán was changed from 昇龍 ( lit.   ' ascending dragon ' ) to the homophone 昇隆 ( lit.   ' ascent and prosperity ' ), in order to reduce any loyalist sentiment towards the old Lê dynasty. Emperors of Vietnam usually used dragon (龍 long ) as a symbol of their imperial strength and power. In 1831, the Nguyễn emperor Minh Mạng renamed it Hà Nội (河內). Hanoi

8680-439: The city has experienced a rapid boom since the 1990s, with average annual growth of 19.1 percent from 1991 to 1995, 15.9 percent from 1996 to 2000, and 20.9 percent during 2001–2003. In addition to eight existing industrial parks, Hanoi is building five new large-scale industrial parks and 16 small- and medium-sized industrial clusters. The non-state economic sector is expanding fast, with more than 48,000 businesses operating under

8804-404: The city to Daluocheng ( Chinese : 大羅城 ; Vietnamese : Đại La Thành ). He built a wall around the city measuring 6,344 meters, with some sections reaching over eight meters in height. Đại La at the time had approximately 25,000 residents, including small foreign communities of Persians, Arabs, Indian, Cham, Javanese, and Nestorian Christians . It became an important trading center of

8928-491: The city's image to attract foreigners. Many foreigners believe that the vendors add a traditional and nostalgic aura to the city, although street vending was much less common prior to the 1986 Đổi Mới policies. The vendors have not able to form effective resistance tactics to the ban and remain embedded in the dominant capitalist framework of modern Hanoi. Hanoi is part of the Maritime Silk Road that runs from

9052-548: The city, such as McDonald's , Lotteria , Pizza Hut , KFC , and others. Locals in Hanoi perceive the ability to purchase " fast-food " as an indication of luxury and permanent fixtures. Similarly, city officials are motivated by food safety concerns and their aspirations for a "modern" city to replace the 67 traditional food markets with 1,000 supermarkets by 2025. This is likely to increase consumption of less nutritious foods, as traditional markets are key for consumption of fresh rather than processed foods. Over three-quarters of

9176-436: The contemporary People's Republic of China (PRC). Many of the individuals who live here have partial Chinese ancestry, and it is not uncommon for Chinese languages to be heard in this region, such as in cities like Lạng Sơn (谅山) and Móng Cái (芒街). 21°42′05″N 106°13′17″E  /  21.70139°N 106.22139°E  / 21.70139; 106.22139 Hanoi Hanoi ( Vietnamese : Hà Nội )

9300-406: The continent. For example, the presence of freshwater fish on an island surrounded by ocean would indicate that it once was attached to a continent, since these fish cannot traverse the ocean on their own. Over the course of time, evolution and extinction changes the nature of animal life on a continental island, but only once it splits from the mainland. An example is that of the southern beech ,

9424-451: The deposition of sediment by waves . These islands erode and grow as the wind and waves shift. Barrier islands have the effect of protecting coastal areas from severe weather because they absorb some of the energy of large waves before they can reach the shore. A fluvial island is an island that forms from the erosion and sedimentation of debris in rivers; almost all rivers have some form of fluvial islands. These islands may only be

9548-426: The distances and frequency with which invasive species may be transported to islands. Floodwaters from these storms may also wash plants further inland than they would travel on their own, introducing them to new habitats. Agriculture and trade also have introduced non-native life to islands. These processes result in an introduction of invasive species to ecosystems that are especially small and fragile. One example

9672-400: The ecological processes that take place on islands, with a focus on what factors effect the evolution , extinction , and richness of species. Scientists often study islands as an isolated model of how the process of natural selection takes place. Island ecology studies organisms on islands and their environment. It has yielded important insights for its parent field of ecology since

9796-433: The famed Long Biên Bridge , built during French colonial times, and more recently to a new district to the east of the Red River . Several older names of Hanoi feature long ( 龍 , transl.  dragon ), linked to the curved formation of the Red River around the city, which was symbolized as a dragon. In 866, it was turned into a citadel and named Đại La ( 大羅 , lit.   ' big net ' ). This gave it

9920-453: The fastest-growing cities in the world in terms of GDP growth from 2008 to 2025. In the year 2013, Hanoi contributed 12.6% to GDP, exported 7.5% of total exports, contributed 17% to the national budget and attracted 22% investment capital of Vietnam. The city's nominal GDP at current prices reached 451,213 billion VND (US$ 21.48 billion) in 2013, which made per capita GDP stand at 63.3 million VND (US$ 3,000). Industrial production in

10044-502: The habit of true warbler species) consumes spiders and insects that live on plants. Other examples of this phenomenon exist worldwide, including in Hawaii and Madagascar, and are not limited to island ecosystems. Species endemic to islands show a common evolutionary trajectory. Foster's rule (also known as the island rule), states that small mammals such as rodents evolve to become larger, known as island gigantism . One such example

10168-466: The headquarters of People's Army of Vietnam , its own Vietnam National University system , and many other governmental organizations. Hanoi is also a major tourist destination, with 18.7 million domestic and international visitors in 2022. The city hosts the Imperial Citadel of Thăng Long , Ho Chi Minh Mausoleum , Hoàn Kiếm Lake , West Lake , and Ba Vì National Park near the outskirts of

10292-404: The imperial Vietnamese nation Đại Việt in modern-day central Hanoi, naming the city Thăng Long ( lit.   ' ascending dragon ' ). In 1428, king Lê Lợi renamed the city to Đông Kinh ( 東京 , lit.   ' eastern capital ' ), and remained being so until 1789. The Nguyễn dynasty in 1802 moved the national capital to Huế and the city was renamed Hanoi in 1831. It served as

10416-565: The international investment community being skeptical of the security of their investments in Vietnam. Rapid urban development and rising costs displaced many residential areas in central Hanoi. Following a short period of economic stagnation after the 1997 Asian financial crisis , Hanoi resumed its rapid economic growth. On 29 May 2008, it was decided that Hà Tây Province , Vĩnh Phúc Province 's Mê Linh District and four communes in Lương Sơn District , Hòa Bình Province be merged into

10540-457: The islands as a naturalist on HMS Beagle in 1835, as part of a five-year circumnavigation of Earth. He wrote that "the different islands to a considerable extent are inhabited by a different set of beings". Through the study of the finches and other animals he realized that organisms survive by changing to adapt to their habitat. It would be over twenty years before he published his theories in On

10664-526: The jobs in Hanoi are state-owned. Nine percent of jobs are provided by collectively owned organizations and 13.3% of jobs are in the private sector. The structure of employment has been changing rapidly as state-owned institutions downsize and private enterprises grow. Hanoi has in-migration controls which allow the city to accept only people who add skills Hanoi's economy. A 2006 census found that 5,600 rural produce vendors exist in Hanoi, with 90% of them coming from surrounding rural areas. These numbers indicate

10788-643: The largest landmass of a particular tectonic plate . Islands can occur in any body of water, including lakes , rivers , seas . Low-tide elevations , areas of land that are not above the surface during a high tide , are generally not considered islands. Islands that have been bridged or otherwise joined to a mainland with land reclamation are sometimes considered "de-islanded", but not in every case. The word island derives from Middle English iland , from Old English igland (from ig or ieg , similarly meaning 'island' when used independently, and -land carrying its contemporary meaning. Old English ieg

10912-524: The late Palaeolithic and early Mesolithic ages can be found in Hanoi. Between 1971 and 1972, archaeologists in Ba Vì and Đông Anh discovered pebbles with traces of carving and processing by human hands that are relics of Sơn Vi Culture , dating from 10,000 to 20,000 years ago. In 1998–1999, the Museum of Vietnamese History (now National Museum of Vietnamese History ) carried out the archaeological studies in

11036-467: The local communities contributed 37% of the total budget. Local labor, community support, and joint funding were decided as necessary for the long-term sustainability of the project. Island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics , and oceanic islands, which have never been part of

11160-529: The main religions of Hanoi for many years. Most people consider themselves Buddhist, though not all of them regularly follow religion. There are more than 50 ethnic groups in Hanoi, of which the Viet (Kinh) is the largest; according to official Vietnamese figures (2019 census), accounting for 98.66% of the population, followed by Mường at 0.77% and Tày at 0.24%. According to a recent ranking by PricewaterhouseCoopers , Hanoi and Ho Chi Minh City will be amongst

11284-404: The mainland, they had no need for boats. The motivation for island exploration has been the subject of research and debate. Some early historians previously argued that early island colonization was unintentional, perhaps by a raft being swept out to sea. Others compare the motivations of Polynesian and similar explorers with those of Christopher Columbus , the explorer who sailed westward over

11408-589: The majority of the local economy and built environment . These islands sometimes also require consistent foreign aid on top of tourism in order to ensure economic growth. This reliance can result in social inequality and environmental degradation . During tourism downturns, these economies struggle to make up the lost inflow of cash with other industries. Climate change threatens human development on islands due to sea level rise , more dangerous tropical cyclones , coral bleaching , and an increase in invasive species . For example, in 2017 Hurricane Maria caused

11532-522: The metropolitan area of Hanoi from 1 August 2008. Hanoi's total area then increased to 334,470 hectares in 29 subdivisions with the new population being 6,232,940, effectively tripling its size. The Hanoi Capital Region ( Vùng Thủ đô Hà Nội ), a metropolitan area covering Hanoi and six surrounding provinces under its administration, will have an area of 13,436 square kilometres (5,188 sq mi) with 15 million people by 2020. Hanoi has experienced rapid expansion in its modern period, accompanied by

11656-481: The most recent expansion in August 2008, Hanoi has a population of 6.233 million and is among the 17 capitals with the largest area in the world. According to the 2009 census, Hanoi's population is 6,451,909 people. As of 1 April 2019, Hanoi had a population of 8,053,663, including 3,991,919 males and 4,061,744 females. The population living in urban areas is 3,962,310 people, accounting for 49.2% and in rural areas

11780-427: The much greater earning potential in urban rather than in rural spaces. The uneducated, rural, and mostly female street vendors are depicted as participants of " microbusiness " and local grassroots economic development by business reports. In July 2008, Hanoi's city government devised a policy to partially ban street vendors and side-walk based commerce on 62 streets due to concerns about public health and "modernizing"

11904-575: The municipality. Hanoi's urban area has a wide range of architectural styles , including French colonial architecture , brutalist apartments typical of socialist nations and disorganized alleys – tube houses stemming from the city's rapid growth in the 20th century. Hanoi has had various names throughout history. It was known first as Long Biên ( 龍編 , lit.   ' dragons interweaving ' ), then Tống Bình ( 宋平 , lit.   ' Song pacification ' ) and Long Đỗ ( 龍肚 , lit.   ' dragon belly ' ). Long Biên later gave its name to

12028-924: The name to Tonkin and Gulf of Tonkin . A square adjacent to the Hoàn Kiếm lake was named Đông Kinh Nghĩa Thục after the reformist Tonkin Free School under French colonization. After the end of the Tây Sơn had expanded further south, the city was named Bắc Thành ( 北城 , lit.   ' northern citadel ' ). Minh Mạng renamed the city Hà Nội ( 河內 ) in 1831. This has remained its official name until modern times. Several unofficial names of Hanoi include: Kẻ Chợ (仉𢄂, lit.   ' marketplace ' ), Tràng An ( lit.   ' long peace ' ), Long Thành (short for Kinh thành Thăng Long , "citadel of Thăng Long"), Kinh Thành (capital city), Hà Thành (short for Thành phố Hà Nội , "city of Hanoi"), and Thủ Đô (capital). Many vestiges of human habitation from

12152-612: The neighborhood altogether. The pace of change has especially escalated after the abandonment of central-planning economic policies and relaxing of the district-based household registrar system. Hanoi's telephone numbers have been increased to 8 digits to cope with demand (October 2008). Subscribers' telephone numbers have been changed in a haphazard way; however, mobile phones and SIM cards are readily available in Vietnam, with pre-paid mobile phone credit available in all areas of Hanoi. The three teachings ( Vietnamese : tam giáo ) of Buddhism , Taoism , and Confucianism have been

12276-462: The nickname La Thành ( 羅城 , lit.   ' La citadel ' ). Both Đại La and La Thành are names of major streets in modern Hanoi. When Lý Thái Tổ established the capital in the area in 1010, it was named Thăng Long ( 昇龍 ). Thăng Long later became the name of a major bridge on the highway linking the city center to Nội Bài Airport , and the Thăng Long Boulevard expressway in

12400-732: The north and east by the Vietnam-China border, while the Southeast overlooks the Gulf of Tonkin . The southern limit is composed of the Tam Đảo mountain range and the Red River Delta . It is also mountainous in the midlands, the mountainous include massifs , and limestone mountains. The western side , is limited by the Red River valley and the Chảy River 's source, above, is composed of granite , slate and limestone plateau. In essence, this

12524-526: The north of Đồng Mô Lake  [ vi ] ( Sơn Tây , Hanoi), finding various relics and objects belonging to the Sơn Vi Culture dating back to the Paleolithic Age around 20,000 years ago. During the mid-Holocene transgression, the sea level rose and immersed low-lying areas; geological data clearly show the coastline was inundated and was located near present-day Hanoi, as is apparent from

12648-583: The northern and western parts of the city. The highest peak is at Ba Vi with 1281 m, located west of the city proper. When using the Köppen climate classification , Hanoi is categorized as having a monsoon-influenced humid subtropical climate ( Köppen Cwa ) with plentiful precipitation like other places in Northern Vietnam. The city experiences the typical climate of Northern Vietnam, with four distinct seasons. Summer, from May to September,

12772-524: The number of Vietnam's sea islands (including the Hoàng Sa and Trường Sa ). During the multiple eras of Vietnam under Chinese rule , this region was often controlled by Chinese dynasties for almost a thousand years, beginning from the Han dynasty when they had conquered Nanyue . It left a legacy whereby this region is the most heavily sinicized in Vietnam. Even today, many cross-border changes occur with

12896-529: The past, some societies were found to have lost their seafaring ability over time, such as the case of the Canary Islands , which were occupied by an indigenous people since the island's first discovery in the first century until being conquered by the Spanish Empire in 1496. It has been hypothesized that since the inhabitants had little incentive for trade and had little to any contact with

13020-458: The plateau created long and deep canyons . There are also some small plains, like Thất Khê , Lạng Sơn , Lộc Bình , and Cao Bằng . To the east , from the Gâm River 's middle into the sea , which is lower than many mountains arc turned eastward turn from east to west is the Gâm River's anticline , Ngân Sơn-Yên Lạc Bow , Bắc Sơn Massif , Đông Triều Mountain range . Mountains rising above

13144-471: The population of the city was 132,145. After the First Indochina War , many French and Chinese people left the city to either move south or repatriate. Hanoi's population only started to increase rapidly in the second half 20th century. In 1954, the city had 53 thousand inhabitants, covering an area of 152 km . By 1961, the area of the city had expanded to 584 km , and the population

13268-441: The population. For the first time, the region formed part of a polity headed by a Chinese ruler. In 111 BC, the Han dynasty conquered Nanyue and ruled it for the next several hundred years. Han dynasty organized Nanyue into seven commanderies of the south (Lingnan) and now included three in Vietnam alone: Giao Chỉ and Cửu Chân, and a newly established Nhật Nam. In March of 40 AD, Trưng Trắc and Trưng Nhị, daughters of

13392-503: The rapidly expanding city. Hanoi is a landlocked municipality in the northern region of Vietnam, situated in Vietnam's Red River delta, nearly 90 km (56 mi) from the coast. Hanoi contains three basic kinds of terrain, which are the delta area, the midland area and the mountainous zone. In general, the terrain becomes gradually lower from north to south and from west to east, with the average height ranging from 5 to 20 meters above sea level. Hills and mountainous zones are located in

13516-427: The redevelopment of culturally significant areas in Hanoi persuaded the national government to implement a low-rise policy surrounding Hoàn Kiếm Lake . The Ba Đình District is also protected from commercial redevelopment. On 12 September 2023, at least 56 people died in a huge fire in an apartment block in Hanoi. The fire highlighted the lack of adequate fire safety measures in many newly constructed apartments in

13640-789: The sea entirely. An example is the Hawaiian Islands , with the oldest island being 25 million years old, and the youngest, Hawaii , still being an active volcano . However, not all island chains are formed this way. Some may be formed all at once by fractures in the tectonic plates themselves, simultaneously creating multiple islands. One supporting piece of evidence is that of the Line Islands , which are all estimated to be 8 million years old, rather than being different ages. Other island chains form due to being separated from existing continents. The Japanese archipelago may have been separated from Eurasia due to seafloor spreading ,

13764-659: The sea form the famous scenery of Hạ Long . The arc of these mountains are mostly covered tail at Tam Đảo . Southwest , from Phú Thọ , southern Tuyên Quang , southern Yên Bái and Thái Nguyên , lower toward the plain. It is called as the " midlands ". The height of this section is about 100–150 m. The Northeast has many rivers flow through, including the major river of the Red , Chảy , Lô , Gâm (the Red rivers system ), Cầu , Thương , Lục Nam (in Thái Bình river system ), Bằng , Bắc Giang , Kỳ Cùng ... Northeast's sea region has many large and small islands, nearly 2/3

13888-463: The second-highest gross regional domestic product of all Vietnamese provinces and municipalities at 51.4 billion USD in 2022, behind Ho Chi Minh City . In the third century BCE, the Cổ Loa Capital Citadel of Âu Lạc was constructed in what is now Hanoi. Âu Lạc then fell under Chinese rule for around a thousand years . In 1010, Vietnamese emperor Lý Thái Tổ established the capital of

14012-525: The southwest of the city center. In modern times, the city is usually referred to as Thăng Long – Hà Nội , when its long history is discussed. During the Hồ dynasty , it was called Đông Đô ( 東都 , lit.   ' eastern metropolis ' ). During the Ming occupation , it was called Đông Quan ( 東關 , lit.   ' eastern gate ' ). During the Lê dynasty , Hanoi was known as Đông Kinh ( 東京 ), which gave

14136-549: The study of islands is due to their unique cultures and natural environments that differ from mainland cultures. This is for a few reasons: First, the obvious political and geographic isolation from mainland cultures. Second, unique restraints on resources and ecology creating marine-focused cultures with a focus on fishing and sailing. Third, a lasting historical and political significance of islands. The Polynesian diet got most of its protein from fishing. Polynesians were known to fish close to shore, as well as in deep water. It

14260-450: The surface. When these coral islands encircle a central lagoon , the island is known as an atoll . The formation of reefs and islands related to those reefs is aided by the buildup of sediment in shallow patches of water. In some cases, tectonic movements lifting a reef out of the water by as little as 1 meter can cause sediment to accumulate and an island to form. Barrier islands are long, sandy bars that form along shorelines due to

14384-447: The temperature reached up to 42.5 °C (108.5 °F) in a week. Hanoi can sometimes experience snow in winter. The most recent snow happened on Ba Vì mountain range , and the temperature fell to 0 °C (32 °F) on 24 January 2016. Hà Nội is divided into 12 urban districts, 1 district-leveled town and 17 rural districts. When Hà Tây was merged into Hanoi in 2008, Hà Đông was transformed into an urban district while Sơn Tây

14508-438: The time of Charles Darwin . In biology, endemism is defined as the phenomenon where species or genus is only found in a certain geographical area. Islands isolate land organisms from others with water, and isolate aquatic organisms living on them with land. Island ecosystems have the highest rates of endemism globally. This means that islands contribute heavily to global biodiversity . Areas with high lives of biodiversity are

14632-654: The town of Sơn Tây from Hà Sơn Bình Province , and the districts of Mê Linh and Sóc Sơn from Vĩnh Phú Province  [ vi ] . The five districts annexed from Hà Sơn Bình would be given to Hà Tây and Mê Linh to Vĩnh Phúc in 1991; they would be re-annexed into Hanoi in 2008. After the Đổi Mới economic policies were approved in 1986, the Communist Party and national and municipal governments hoped to attract international investments for urban development projects in Hanoi. High-rise commercial buildings did not begin to appear until ten years later due to

14756-622: The west. Similar to Ho Chi Minh City , Hanoi enjoys a rapidly developing real estate market. The most notable new urban areas are central Trung Hòa Nhân Chính, Mỹ Đình , the luxurious zones of The Manor, Ciputra, Royal City in the Nguyễn Trãi Street (Thanh Xuân District) and Times City in the Hai Bà Trưng District. With an estimated nominal GDP of US$ 42.04 billion as of 2019, it is the second most productive economic area of Vietnam (after Ho Chi Minh City ) Agriculture , previously

14880-640: Was conquered and briefly occupied by the French military in late 1873 and passed to them ten years later . As Hanoi, it was located in the protectorate of Tonkin and became the capital of French Indochina in 1902. The city was occupied by the Imperial Japanese Army in 1940, Japan overthrew French rule in Hanoi in March 1945. After the fall of the Empire of Vietnam , it became the capital of

15004-416: Was 91,000 people. In 1978, National Assembly (Vietnam) decided to expand Hanoi for the second time to 2,136 km , with a population of 2.5 million people. By 1991, the area of Hanoi continued to change, decreasing to 924 km (357 sq mi), but the population was still over 2 million people. During the 1990s, Hanoi's population increased steadily, reaching 2,672,122 people in 1999. After

15128-594: Was created out of collaboration between planners from Hanoi and the National Institute of Urban and Rural Planning in the Ministry of Construction . The plan's three main objectives were to create housing and a new commercial center in an area known as Nghĩa Đô, expand residential and industrial areas in the Gia Lâm District , and develop the three southern corridors linking Hanoi to Hà Đông and

15252-545: Was founded by the Chinese Liu Song dynasty as the seat of a new district called Tống Bình (Songping) within Giao Chỉ commandery . The name refers to its pacification by the dynasty. It was elevated to its own commandery at some point between AD 454 and 464. The commandery included the districts of Yihuai (義懷) and Suining (綏寧) in the south of the Red River (now Từ Liêm and Hoài Đức districts) with

15376-470: Was reported that Rapa Nui people were known to fish as far as 500 km (310 mi) from shore at coral reefs. Spear , line , and net fishing were all used, to catch tuna as well as sharks and stingrays . Island cultures also cultivate native and non-native crops. Polynesians grew the native yam , taro , breadfruit , banana , coconut and other fruits and vegetables. Different island climates made different resources more important, such as

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