Question 2: (12 marks) Most economists consider Canada's natural rate of unemployment to be around 6%. Janet Yellen, the US Secretary of the Treasury, considers that rate to be true for the US as well. (1) Please provide a brief definition and example of a natural rate of unemployment (2) If the current rate of unemployment is 8%, what are the likely causes of this rate of unemployment, from the 4 suggested causes of unemployment? (3) If the current rate of unemployment is 4%, what are the likely causes of this rate of unemployment, from the same 4 causes used in the previous