Question

is it legal for south African firms to collude with one another to set prices ,provide some evidence in support of your answer

Answer 1

Well that depends if their collusion was done lawfully or unlawfully. If they followed guidelines under their law then they did nothing wrong. However, if they colluded to manipulate the economy for their own gain and did it contrary to the law then they guilty of a criminal offense. That is true no matter what company or country does that.