Answer:
Adoption of a Single Language and acceptability of ethnic languages: Language is spoken by people of various backgrounds and tribes. Language provides a form of identity between people. Adoption of a single common language will ensure there is unity between the people as one.
Organization of Festivals: This will help in the tribes showcasing their rich heritage from time to time and appreciating their culture.
Ensuring Laws which promote ethnic conflicts or favoritism are removed: This will help in making sure every tribe is equally important in the country.
Promotion of Sports: Sports is a healthy way of promotion of peace and togetherness as its importance can be seen during world tournaments.
Museums and cultural centers should also be built and promoted.