Which province in Vietnam has never been merged or renamed?

TPO - After many mergers and divisions, we now know that Vietnam has 63 provinces and cities. Most of them have been split, merged, and renamed. But there are 2 provinces that have not been split, merged, or renamed since their establishment in the feudal period. Which provinces are they?

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  Lai Chau

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  Dien Bien

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  Ba Ria- Vung Tau

The correct answer is option B: Dien Bien district belongs to Dien Bien province. This is the only district in the country with the same name as the province. In addition to this district, the province also has Dien Bien Phu city, Dien Bien Dong district also has the word "Dien Bien". Dien Bien is a mountainous province in the Northwest, with an area of ​​more than 9,500 km2. Previously, this province belonged to Lai Chau, separated in 2003. Currently, Dien Bien province has one city, one town and 8 districts. The name Dien Bien was given by King Thieu Tri in 1841. In which, "Dien" means solid, "Bien" means border area, frontier. Dien Bien is a district located in the southwest of Dien Bien province. Dien Bien district also borders Dien Bien Phu city. Dien Bien district has an area of ​​about 1,396 km2, with a population of 93,850 people according to 2019 statistics. There are many ethnic groups living here. In addition, Vietnam has some districts with the same name as non-provincial provinces, for example Hoa Binh district (Bac Lieu province), Quang Ninh district (Quang Binh province)...

Source: https://tienphong.vn/tinh-nao-o-viet-nam-chua-tung-bi-sap-nhap-doi-ten-post1721125.tpo