Lai Châu is a mountainous province in the Northwest region of Vietnam. Lai Châu province is one of the most sparsely populated regions in Vietnam, and it shares a border with China. It was once a semi-independent White Tai confederation known as Sip Song Chau Tai, but was absorbed by France into French Indochina in the 1880s and subsequently became part of Vietnam following Vietnamese independence in 1954. It became part of the Northwest Autonomous Area of the Democratic Republic of Vietnam from 1955 to 1975, when Lai Châu province was formed. Điện Biên province was carved out of Lai Châu in 2004. The province covers an area of about 9,069 km (3,501 sq mi) and as of 2022 it had a population of 482,100 people.
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Lai Châu province in the context of Yên Bái province
Yên Bái was a former province located in Northwest Vietnam. It shared borders with six provinces which are Hà Giang province, Lào Cai province, Lai Châu province, Sơn La province, Phú Thọ province, and Tuyên Quang province. The province covered an area of about 6,893 km (2,661 sq mi) and as of 2022 it had a population of 847,250 people.
Yên Bái's history is important under the French colony, particularly the subsequent "Yên Bái mutiny", an uprising of Vietnamese soldiers in the French colonial army on 10 February 1930 in collaboration with civilian supporters who were members of the Việt Nam Quốc Dân Đảng (VNQDD, the Vietnamese Nationalist Party).
View the full Wikipedia page for Yên Bái province