How was South African society in the late 19th century affected by the economic factors addressed in the sources?

Increased numbers of British migrants in the area led to conflict with the indigenous Boer and Zulu populations.
Intermarriage between British migrants and indigenous Boer and Zulu populations created a new middle class.
British migrants encouraged wars between the indigenous Boer and Zulu populations that weakened both of those cultures.
British migrants demanded that indigenous Boer and Zulu populations speak English and convert to Christianity.