The answer is all of the above
Invasions by Barbarian tribes
Economic troubles and overreliance on slave labor
The Population Registration Act determined people's race classification, which in turn determined the implementation of many other racially based laws. One of the apartheid laws passed in the 1950s was the Group Areas Act, which determined where people of different racial groups could live.
I think it is A I hope u get it right good luck
The election will occur in 2018. A senators term lasts for 6 years, and since he was elected in 2012 it will be 6 years later