The mask produced by native americans in the pacific northwest were used for

Special ceremonies and rituals.

Explanation:

This is one of the reasons why Native Americans in the Pacific Northwest created masks. Spirituality was an important part of the lives of these people, and the masks had an important role in this. Their masks were meant to be used in spiritual ceremonies and rituals. Therefore, the masks often represented animals or other creatures that were significant in the cultural traditions of these people.