1 . The Vietnamese ethnic groups are characterized by their musical instruments and dances associated with forms of antiphonal singing.

2 . Mountain dwellers grow rubber trees and certain types of rice to obtain money.

3 . Many rural families can't afford running water or to have electricity.

4 . People who live in the central highlands and the northern mountains are very self sufficient.

5 . We can recognize different ethnic groups in vietnam easily based on their clothing.