It depends on how you manage the cultural dimesnion of nation building and it is only after that you can understand the impact of culture in nation buildings.
Culture is important in nation building because it provides a shared identity, values, and traditions that bring together various groups of people to create an integrated nation. Promoting social unity and national unity requires effective cultural management.
In the case of India, the government has taken steps to manage cultural diversity and foster citizens' sense of shared identity. India, for example, observes a number of festivals throughout the year, including Diwali, Eid, and Christmas. These festivals bring together individuals from various backgrounds and highlight the richness of India's cultural history. Furthermore, the Indian government has established cultural institutions such as the Indian Council for Cultural Relations (ICCR), which foster cultural exchange and knowledge on a national and worldwide scale. India has been able to develop a strong and united nation with a strong feeling of cultural pride and identity by properly managing cultural diversity.