Multiple reasons. Firstly, Britain (a world-wide power) was setting humongous taxes on imported and exported goods. (As in the 'Tea Party' the Americans rebelled by throwing the tea into the sea). The colonies were irritated by this whole control, and wanted more power and say in what taxes were put on them.
Blacks lived in the Bantustan territory, so it’s not B. Also, apartheid is the segregation and discrimination of blacks. So, choices A and C don’t make sense either.
