Question: What is known as the Kingdom and the National Route 13 stretches towards the border?

full_context: Document 1: National Route 13 (Vietnam): National Route 13 (Vietnamese: "Quốc lộ 13" ) is a highway in southern Vietnam stretching from the northeastern outskirts of Ho Chi Minh City, the commercial centre of the country, towards the border to Cambodia. The highway starts around Thủ Đức on the northern outskirts of Ho Chi Minh City, once the site of the military academy of the Army of the Republic of Vietnam, and travels north through the provinces of Bình Dương and Bình Phước. The highway passes through the districts of Thuận An, Thủ Dầu Một town, Bến Cát, Chơn Thành, Đồng Phú, Bình Long, and Lộc Ninh.
Document 2: Cambodia: Cambodia ( ; Khmer: កម្ពុជា , or Kampuchea ] ), officially known as the Kingdom of Cambodia (Khmer: ព្រះរាជាណាចក្រកម្ពុជា , "Preăh Réachéanachâk Kâmpŭchéa", ] ), is a country located in the southern portion of the Indochina Peninsula in Southeast Asia. It is 181035 km2 in area, bordered by Thailand to the northwest, Laos to the northeast, Vietnam to the east, and the Gulf of Thailand to the southwest.
Document 3: Khao-I-Dang: Khao-I-Dang Holding Center was a Cambodian refugee camp located 20 km north of Aranyaprathet in Prachinburi (now Sa Kaeo) Province of Thailand. The most enduring refugee camp on the Thai-Cambodian border, it was established in late 1979 and administered by the Thai Ministry of the Interior and the United Nations High Commissioner for Refugees (UNHCR) -- unlike other camps on the border, which were administered by a coalition made up of UNICEF, the World Food Program, International Committee of the Red Cross (ICRC) (briefly) and, after 1982, the United Nations Border Relief Operation (UNBRO).
Document 4: Malai District: Malai District (Khmer: ស្រុកម៉ាឡៃ , "Mountains of Malaya") is a district ("srok") in the south west of Banteay Meanchey Province, in north-western Cambodia. The district capital is Malai town located around 75 kilometres west of the provincial capital of Sisophon by road. The long narrow district shares a border with Thailand to the north and west and with Battambang Province to the south. No national highway or national roads run through the district and road access from within Cambodia is difficult. The district was a Khmer Rouge stronghold and battleground through the 1980s and 1990s. Today it is a remote and sparsely populated border area with scattered settlements mostly made up of former rebels.
Document 5: National Route 8 (Vietnam): National Route 8 (Part of AH15 ) is a highway in Hà Tĩnh Province in North Central of Vietnam, which is managed and maintained by the central government. The route includes two segments. The 85.3 km-long segment from Hồng Lĩnh Township across Đức Thọ and Hương Sơn districts is called National Route 8A. There are 36 bridges in this route in which the two longest are Linh Cảm (crosses La River) and Hà Tân bridges. National Route 8A crosses Annamite Range and connects to National Route 1A, Ho Chi Minh Highway and Lao National Route 8.
Document 6: Ho Chi Minh City University of Transport: Ho Chi Minh City University of Transport, abbreviation: UT-HCMC (Vietnamese: Đại học Giao thông Vận tải Thành phố Hồ Chí Minh ) is a public university under the Ministry of Transport in Vietnam. The university provides associate, undergraduate and postgraduate education in various areas of transport. The main campus is located in Binh Thanh District, Ho Chi Minh City. The predecessor of the university was the Ho Chi Minh City branch of Vietnam Maritime University, founded in 1988. From this branch, it was upgraded to university status in 2001.
Document 7: Geography of Saudi Arabia: The Kingdom of Saudi Arabia is a country situated in Southwest Asia, the largest country of Arabia, bordering the Persian Gulf and the Red Sea, north of Yemen. Its extensive coastlines on the Persian Gulf and Red Sea provide great leverage on shipping (especially crude oil) through the Persian Gulf and Suez Canal. The kingdom occupies 80% of the Arabian Peninsula. Most of the country's boundaries with the United Arab Emirates (UAE), Oman, and the Republic of Yemen (formerly two separate countries: the Yemen Arab Republic or North Yemen; and the People's Democratic Republic of Yemen or South Yemen) are undefined, so the exact size of the country remains unknown. The Saudi government estimate is at 2,217,949 square kilometres, while other reputable estimates vary between 2,149,690 and 2,240,000 sq. kilometres. Less than 1% of the total area is suitable for cultivation, and in the early 1990s, population distribution varied greatly among the towns of the eastern and western coastal areas, the densely populated interior oases, and the vast, almost empty deserts.
Document 8: Phú Mỹ Hưng: Phu My Hung Urban Area is a planned city located in District 7, southern Ho Chi Minh City. Built by the Vietnamese-Taiwanese joint venture Phu My Hung Corporation since 1997, Phu My Hung is a showcase of modern urban neighbourhood in Vietnam, turning wetlands into a multifunctional urban area. The new city features one of the largest Korean expatriates communities in South-east Asia.
Document 9: Koh Rong Sanloem: Koh Rong Sanloem (Khmer: កោះរុងសន្លឹម, also "Kaoh Rong Sanloem") is an island off the coast of Sihanoukville, Cambodia, 4 km south of Koh Rong island. It is around 9 km long (north to south), 4 km wide (east to west) and 1 km wide at its narrowest point. Its distance from the local port of Sihanoukville is 25 km (beeline) and 23 km (beeline) from the Serendipity/Ochheuteal beach pier. The word "Sanloem" translates to: 1. drowsiness and to: 2. far out and hard to discern, in a wider sense. Inconsistencies on how to spell the island's name in its Latinized version date back to the 19th century. The first controversial spelling variants were issued by map makers during French rule. Alternatives have since become widespread and are in common usage. Often confusion ensues as Google Maps offers the phonetically most consistent variant, whereas Google Search redirects to an alternative.
Document 10: National Highway 5 (Cambodia): National Highway 5 or National Road No.5 (10005) is one of the national highways of Cambodia. With a length of 407.45 km , it connects the capital of Phnom Penh with Thailand. NH5 leaves Phnom Penh in a north to northwest direction, it first borders the Tonle Sap, three bridges the Chroy Changvar, the Prek Kdam and the Prek Pnov link the Est of the country. Then it moves away from the river/lake because the land there is flooded part of the year and it exits Kandal Province and traverses Kampong Chhnang Province from the junction with Road 51, north to Kampong Chhnang City, then northwest to Baribour District where it crosses into Pursat Province. From there, it skirts the Tonle Sap lake and continues west to Pursat town, the provincial capital. Leaving Pursat, NH5 again turns northwest and leads to Battambang Province, passing through another provincial capital at Battambang city and continuing on to Serei Saophoan District in Banteay Meanchey Province where it meets the terminus of NH6 and bends westward towards its own terminus at Poipet on the Thai border.
Document 11: National Route 7 (Vietnam): National Route 7 (Vietnamese: "quốc lộ 7" ), formerly called National Route 7A (QL7A) is a national highway in Vietnam which runs entirely in Nghệ An Province, North Central Vietnam. The 225 kilometer-long route runs from Diễn Châu (Diễn Châu District) northwestward across Yên Thành, Đô Lương, Anh Sơn, Con Cuông, Tương Dương, Kỳ Sơn districts and reach Laos-Vietnam border at Nậm Cắn. In Nậm Cắn, National Route 7 connects with National Route 7 of Laos.
Document 12: Geography of South Korea: South Korea is located in East Asia, on the southern half of the Korean Peninsula jutting out from the far east of the Asian land mass. The only country with a land border to South Korea is North Korea, lying to the north with 238 km of border running along the Korean Demilitarized Zone. South Korea is mostly surrounded by water and has 2,413 km of coast line along three seas. To the west is the Yellow Sea, to the south is the East China Sea, and to the east is Ulleung-do and Liancourt Rocks in the (East Sea). Geographically, South Korea's land mass is approximately 100,032 km2 . 290 km2 of South Korea are occupied by water. The approximate coordinates are 37° North, 127° 30 East.
Document 13: Indonesian National Route 13: Indonesian National Route 13 is a road in the national route system, and its course is entirely within the borders of the DKI Jakarta province. It's 15 kilometre path goes alongside with Java's arterial highway route, the Indonesian National Route 1, and is also indirectly connected to another route, that being the Indonesian National Route 2.
Document 14: Route 13 (Laos): Route 13 is the most important highway in the country of Laos. It begins at Boten in the North of Laos at the Chinese border. It connects the city of Vientiane to Luang Prabang in the north and roughly follows the line of the Mekong River down to the border with Cambodia. The road then continues at National Highway 7 in Cambodia. Also this national highway leads past all three international airports in Laos Vientiane Airport, Luang Prabang Airport and Pakse Airport. Between Boten and Nateuy the Route 13 is at a length of 20 km part of the Kunming-Bangkok Expressway, which is also part of the Asian Highway AH3. From Nateuy to Vientiane, the Route 13 is part of the AH12 and from Vientiane to the border of Cambodia AH11.
Document 15: Aranyaprathet: Aranyaprathet (Thai: อรัญประเทศ) is a town ("thesaban mueang") in Sa Kaeo Province in eastern Thailand . It covers the entire "tambon" of Aranyaprathet, in Aranyaprathet District. As of 2005, the town has 16,937 inhabitants. It is located just 6 km from the border with Cambodia; the town of Poipet is on the other side of the border. On the Thai side of the border is the huge Rongkluea market. Cambodian people cross the border daily with pushcarts and scooters with side cars loaded with their products. A significant part of the trade is in second hand clothes. Just over the border on the Cambodian side there are casinos. These are visited by many Thai people because gambling is prohibited in Thailand. Special free buses run between Bangkok and these casinos. Cambodians themselves are not allowed to gamble in these border casinos.
ground_truth: Cambodia