Until the 18th century there was a strong belief in animism in Zambia and Botswana. To do a rain dance for the gods, or 'gofethla pula ", was very ordinary. This changed with the arrival of Christian missionaries in the early 19th century. They brought a lot of new ideas, which, however, undermined the old customs and traditions of the population. The majority of the population has been converted to the Christian faith. There are a small number of Hindu and Muslim communities too.