Why did many Khoisan languages disappear in South Africa?

Many Khoisan languages in South Africa disappeared due to inexorable social, economic, linguistic, and demographic forces that marginalized and consumed indigenous linguistic and cultural minorities.1

As speakers of these languages came into contact with European colonists and Bantu-speaking populations, they often shifted rapidly to dominant languages, such as Afrikaans or various Bantu languages. This shift led to the cessation of mother-tongue transmission to children, causing the languages to contract and eventually die out.21

In some instances, this process occurred quite abruptly, though not before the Khoisan languages exerted a profound influence on the sound structures and vocabularies of the languages their speakers adopted. For example, the Khoekhoe languages left a lasting mark on the shaping of vernacular Afrikaans and influenced the Xhosa language in the southeastern Cape. While many of these languages are now extinct, such as !Ora and Gri, some, like !Khomani, are still spoken by a few individuals in the Northern Cape province.213