What language do the Tswana people of Botswana and South Africa speak?

The Tswana Language: Setswana

The Tswana people speak Setswana, a Bantu language from the Niger-Congo family. Setswana is one of South Africa's eleven official languages and, alongside English, serves as an official language in Botswana. Interestingly, Setswana contains some dialectical variations, but speakers of these dialects can easily understand one another.