What is the importance of preserving and promoting indigenous peoples' first languages?

Preserving and promoting indigenous peoples' first languages is important because it helps to maintain their cultural identity, heritage, and knowledge. It also fosters a sense of belonging and pride within the community, and can contribute to overall well-being and mental health. Additionally, language is a key aspect of communication and understanding, and preserving indigenous languages helps to ensure that valuable traditional knowledge and wisdom are passed down to future generations.