The article doesn't mention the fact that 78% of people in Botswana are ethnically Tswana and speak Tswana, which is a level of homogeneity that is almost unhea

The article doesn't mention the fact that 78% of people in Botswana are ethnically Tswana and speak Tswana, which is a level of homogeneity that is almost unheard of in Sub-Saharan Africa. On the other hand, nearby Lesotho and Swaziland are even less diverse, and are doing far worse, so it's obviously not the only factor.