Sea level riseBetween 1901 and 2018, the average global sea level rose by , or an average of 1–2 mm per year. This rate accelerated to 4.62 mm/yr for the decade 2013–2022. Climate change due to human activities is the main cause. Between 1993 and 2018, thermal expansion of water accounted for 42% of sea level rise. Melting temperate glaciers accounted for 21%, with Greenland accounting for 15% and Antarctica 8%. Sea level rise lags changes in the Earth's temperature.
Effects of climate changeClimate change affects the physical environment, ecosystems and human societies. Changes in the climate system include an overall warming trend, more extreme weather and rising sea levels. These in turn impact nature and wildlife, as well as human settlements and societies. The effects of human-caused climate change are broad and far-reaching, especially if significant climate action is not taken. The projected and observed negative impacts of climate change are sometimes referred to as the climate crisis.
CambodiaCambodia (kæmˈboʊdiə) or Kampuchea (ˌkæmpʊˈtʃiːə; កម្ពុជា, UNGEGN: kampuciə), officially the Kingdom of Cambodia, is a country in the southern Indochinese Peninsula in Southeast Asia, spanning an area of , bordered by Thailand to the northwest, Laos to the north, Vietnam to the east, and the Gulf of Thailand to the southwest. The capital and largest city is Phnom Penh. Cambodia has been inhabited since prehistoric times. In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla under the name "Kambuja".
ChampaChampa (Cham: ꨌꩌꨛꨩ; ចាម្ប៉ា; Chiêm Thành 占城 or Chăm Pa 占婆) was a collection of independent Cham polities that extended across the coast of what is present-day central and southern Vietnam from approximately the 2nd century AD until 1832. According to earliest historical references found in ancient sources, the first Cham polities were established around the 2nd to 3rd centuries CE, in the wake of Khu Liên's rebellion against the rule of China's Eastern Han dynasty, and lasted until when the final remaining principality of Champa was annexed by Emperor Minh Mạng of the Vietnamese Nguyễn dynasty as part of the expansionist Nam tiến policy.
JiaozhiJiaozhi (standard Chinese, pinyin: Jiāozhǐ), or Giao Chỉ, was a historical region ruled by various Chinese dynasties, corresponding to present-day northern Vietnam. The kingdom of Nanyue (204–111 BC) set up the Jiaozhi Commandery (; Quận Giao Chỉ, chữ Hán: 郡交趾) an administrative division centered in the Red River Delta that existed through Vietnam's first and second periods of Chinese rule. During the Han dynasty, the commandery was part of a province of the same name (later renamed to Jiaozhou) that covered modern-day northern and central Vietnam as well as Guangdong and Guangxi in southern China.
ChamsThe Chams (Cham: ꨌꩌ, Čaṃ) or Champa people (Cham: , Urang Campa; Người Chăm or Người Chàm; ជនជាតិចាម, ) are an Austronesian ethnic group in Southeast Asia, and indigenous people of Central Vietnam. The Cham people are largely Muslims in Vietnam and predominantly Buddhist Cambodia. From 2nd century to 1832, the Cham populated Champa, a collection of independent principalities in what is now central and southern Vietnam.
Khmer languageKhmer (kəˈmɛər; ខ្មែរ, UNGEGN: Khmêr khmae) is an Austroasiatic language spoken by the Khmer people, and the official and national language of Cambodia. Khmer has been influenced considerably by Sanskrit and Pali, especially in the royal and religious registers, through Hinduism and Buddhism. It is also the earliest recorded and earliest written language of the Mon–Khmer family, predating Mon and Vietnamese, due to Old Khmer being the language of the historical empires of Chenla, Angkor and, presumably, their earlier predecessor state, Funan.
Buddhism in VietnamBuddhism in Vietnam (Đạo Phật 道佛 or Phật Giáo 佛教 in Vietnamese), as practiced by the Vietnamese, is mainly of the Mahayana tradition and is the main religion, a combination of Pure Land and Zen (Thiền). Buddhism may have first come to Vietnam as early as the 3rd or 2nd century BCE from the Indian subcontinent or from China in the 1st or 2nd century CE. Vietnamese Buddhism has had a syncretic relationship with certain elements of Taoism, Chinese spirituality, and Vietnamese folk religion.
Jarai peopleJarai people or Jarais (Người Gia Rai, Gia Rai, or Gia-rai; ចារ៉ាយ, Charay) are an Austronesian indigenous people and ethnic group native to Vietnam's Central Highlands (Gia Lai and Kon Tum Provinces, with smaller populations in Đắk Lắk Province), as well as in the Cambodian northeast Province of Ratanakiri. During the Vietnam War, many Jarai persons, as well as members of other Montagnard groups (Khmer Loeu and Degar), worked with US Special Forces, and many were resettled with their families in the United States, particularly in North Carolina, after the war.
Red River DeltaThe Red River Delta or Hong River Delta (Châu thổ sông Hồng) is the flat low-lying plain formed by the Red River and its distributaries merging with the Thái Bình River in northern Vietnam. Hồng (紅) is a Sino-Vietnamese word for "red" or "crimson". The delta has the smallest area but highest population and population density of all regions. The region, measuring some is well protected by a network of dikes. It is an agriculturally rich and densely populated area. Most of the land is devoted to rice cultivation.
