2. Where do these ethnic groups mainly live?
- Northwest region: Viet, Hmong, Lao
- Northeast region: Viet, Hmong, Nung, Tay
- Red River Delta: Viet
- The Central Highlands: Viet, Bahnar, Brau, Ede, Giarai, Sedang
- Mekong River Delta: Cham, Khmer, Viet