write about an ethnic group in vietnam Chắc chắn đúng

Muong , also called mol, antimony, mual, is living in the midlands and northern vietnam. Muong people are recognized as a member of the 54 ethnic minority community of vietnam. 
Muong people speak muong, the language of the vietnamese - muong group in the vietnamese language of the southern - khmer language system. 
Muong people are the richest people in hoa binh province and mountainous districts of thanh hoa province. Population in vietnam according to the 2009 census is 1, 268, 963 
Muong people have a very close relationship with people. The language of language studies suggests that muong and kinh gốc are vietnamese - muong. In the thousands of years north of the arctic, the human part of the mountain is less likely to be nationalized, preserving ancient lifestyles. The parts of the midlands and the plains have harmony with northerners about culture, language, and humanity. The process of separating muong - kinh, determined by language, began in the seventh century - 8 and ending in the 12th century, the nhà. [