Here are the correct forms of the words in brackets:

1. Stilt houses are made from **natural** materials like wood, bamboo, and leaves.
2. The ethnic **minority** people in Viet Nam have their own customs and traditions.
3. Which ethnic group has the largest **population** in Viet Nam?
4. Some ethnic peoples in the **mountainous** regions still keep their traditional way of farming.
5. Which do you think is more **colorful**, the Tay's or Nung's costume?
6. If you go to Sa Pa, you should try some **specialties** of the local people sold at the market.
7. There are always regional **differences** in every country.
8. The 54 ethnic peoples of Viet Nam are diverse, but they live in **peace**.
9. Five-coloured sticky rice is a **specialty** in many parts of Viet Nam.
10. The Museum of Ethnology has a huge collection of **cultural** importance from different ethnic groups in Viet Nam.