Khmer people in the context of "Indochina refugee crisis"

Cambodia, officially the Kingdom of Cambodia, is a country in Mainland Southeast Asia. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline along the Gulf of Thailand in the southwest. It spans an area of 181,035 square kilometres (69,898 square miles), dominated by a low-lying plain and the confluence of the Mekong river and Tonlé Sap, Southeast Asia's largest lake. It is dominated by a tropical climate. Cambodia has a population of about 17 million people, the majority of which are ethnically Khmer. Its capital and most populous city is Phnom Penh, followed by Siem Reap and Battambang.

In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla under the name "Kambuja". This marked the beginning of the Khmer Empire. The Indianised kingdom facilitated the spread of first Hinduism and then Buddhism to Southeast Asia and undertook religious infrastructural projects throughout the region, the most famous of which is Angkor Wat. In the 15th century, it began a decline in power until, in 1863, Cambodia became a French protectorate. Following Japanese occupation during World War II, Cambodia declared independence from France in 1953. The Vietnam War embroiled the country in civil war during the 1960s, culminating in a 1970 coup which installed the US-aligned Khmer Republic and the takeover of the communist Khmer Rouge in 1975. The Khmer Rouge ruled the country and carried out the Cambodian genocide from 1975 until 1979, until they were ousted during the Cambodian–Vietnamese War. Peace was restored by the 1991 Paris Peace Accords and subsequent United Nations peacekeeping mission, establishing a new constitution, holding the 1993 general election, and ending long-term insurgencies. The 1997 coup d'état consolidated power under Prime Minister Hun Sen and the Cambodian People's Party (CPP).

Thailand, officially the Kingdom of Thailand, and formerly known as Siam until 1939, is a country located in mainland Southeast Asia. It shares land borders with Myanmar to the west and northwest, Laos to the east and northeast, Cambodia to the southeast, and Malaysia to the south. Its maritime boundaries include the Gulf of Thailand and the Andaman Sea, as well as maritime borders with Vietnam, Indonesia, and India. Thailand has a population of nearly 66 million people, covers an area of approximately 513,115 km (198,115 sq mi). The country's capital and largest city is Bangkok.

Archaeological evidence indicates that humans have inhabited the area of present-day Thailand for at least 40,000 years. Indigenous ethnic groups include the Mon, Khmer, and Malay people. The Tai people are believed to have originated from the Điện Biên Phủ region since the 5th century and began migrating into the territory of modern Thailand between the 8th and 10th centuries origin of the Tai people. During the classical historical period, major kingdoms such as Sukhothai, Lan Na, and Ayutthaya were established. The Sukhothai Kingdom is regarded as the beginning of Thai history, while the Ayutthaya Kingdom, founded in 1350 CE, became a regional power replacing the Khmer Empire. European contact began in 1511 CE when Portuguese envoys arrived in Ayutthaya. The Ayutthaya Kingdom flourished until its complete destruction during the 1765–1767 Burmese–Siamese War by the Burmese forces under the Konbaung dynasty in 1767.

Jayavarman II (Khmer: ជ័យវរ្ម័នទី២; c. 770 – 850, reigned c. 802–850) was a Khmer prince who founded and became the ruler of the Khmer Empire after unifying the Khmer civilization. The Khmer Empire was the dominant civilization in mainland Southeast Asia from the 9th century until the mid-15th century. Jayavarman II was a powerful Khmer king who declared independence from a polity inscriptions named "Java", which most probably refers to the island of Java in the Indonesian archipelago. Jayavarman II founded many capitals such as Mahendraparvata, Indrapura, Amarendrapura, and Hariharalaya. Before Jayavarman II came to power, there was much fighting among local overlords who ruled different parts of Cambodia, and much of the area fell under the orbit of the Shailendra dynasty of Srivijaya. As a child, Jayavarman II had been held in captivity or exile in Java, and was installed as Java's vassal around 800. By starting off with small weak kingdoms, he built himself up from there eventually leading to the Khmer Empire. No inscriptions by Jayavarman II have been found. Later kings of the Khmer Empire described him as a warrior and the most powerful king from that time frame that they could recall. Historians formerly dated his reign as running from 802 CE to 835 CE.

The Khmer Empire was an empire in mainland Southeast Asia, centered on hydraulic cities in what is now northern Cambodia. Known as Kambuja (Old Khmer: កម្វុជ; Khmer: កម្ពុជ) by its inhabitants, it grew out of the former civilization of Chenla and lasted from 802 to 1431. Historians call this period of Cambodian history the Angkor period, after the empire's most well-known capital, Angkor. The Khmer Empire ruled or vassalised most of Mainland Southeast Asia and stretched as far north as southern China.

The beginning of the Khmer Empire is conventionally dated to 802, when Khmer prince Jayavarman II declared himself chakravartin (lit. 'universal ruler', a title equivalent to 'emperor') in the Phnom Kulen mountains. Although the end of the Khmer Empire has traditionally been marked with the fall of Angkor to the Siamese Ayutthaya Kingdom in 1431, the reasons for the empire's collapse are still debated amongst scholars. Researchers have determined that a period of strong monsoon rains was followed by a severe drought in the region, which caused damage to the empire's hydraulic infrastructure. Variability between droughts and flooding was also a problem, which may have caused residents to migrate southward and away from the empire's major cities.

Khmer (/kəˈmɛər/ kə-MAIR; ខ្មែរ, UNGEGN: Khmêr [kʰmae]) is an Austroasiatic language spoken natively by the Khmer people and is an official language and national language of Cambodia. The language is also widely spoken by Khmer people in Eastern Thailand and Isan, Thailand, as well as in the Southeastern and Mekong Delta regions of Vietnam.

Khmer has been influenced considerably by Sanskrit and Pali especially in the royal and religious registers, through Hinduism and Buddhism, due to Old Khmer being the language of the historical empires of Chenla and Angkor.

Angkor (Khmer: អង្គរ [ʔɑŋkɔː], lit. 'capital city'), also known as Yasodharapura (Khmer: យសោធរបុរៈ; Sanskrit: यशोधरपुर), was the capital city of the Khmer Empire, located in present-day Cambodia. The city and empire flourished from approximately the 9th to the 15th centuries. The city houses the Angkor Wat, a temple complex that is one of Cambodia's most popular tourist attractions.

The name Angkor is derived from nokor (នគរ), a Khmer word meaning "kingdom" which in turn derived from Sanskrit nagara (नगर), meaning "city". The Angkorian period began in AD 802, when the Khmer Hindu monarch Jayavarman II declared himself a "universal monarch" and "god-king", and lasted until the late 14th century, first falling under Ayutthayan suzerainty in 1351. A Khmer rebellion against Siamese authority resulted in the 1431 sacking of Angkor by Ayutthaya, causing its population to migrate south to Longvek. The alternate name, Yasodharapura, was derived from the name of the foster mother of Lord Krishna in Hinduism. Hinduism was the largest religion in the ancient Khmer Empire, and many temples were constructed by Khmer kings dedicated to Hindu deities, including Angkor Wat.

The flag of Cambodia (ទង់ជាតិកម្ពុជា) or the Khmer flag (ទង់ជាតិខ្មែរ) in its present form was originally adopted in 1948 and readopted in 1993, after the Constituent Assembly election in 1993 and restoration of the Cambodian monarchy.

Suphan Buri (Thai: สุพรรณบุรี, pronounced [sù.pʰān būrīː]), located in the central region of Thailand, is one of the country's 76 provinces (จังหวัด, changwat), its first-level administrative divisions. Suphan Buri's neighbouring provinces are (from north clockwise) Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Phra Nakhon Si Ayutthaya, Nakhon Pathom and Kanchanaburi. In 2018, the province had a population of around 848,700, making up about 1.28% of the Thailand's total.

Suphan Buri Province has a moderately diverse ethnic population, the majority of which are of Tai, Mon, Lao, Chinese, and Khmer descent.