be that a national, regional, or the global economy
defines Macroeconomics as
"The study of whole economic systems aggregating over the functioning of individual economic units. It is primarily concerned with variables which follow systematic and predictable paths of behaviour and can be analysed independently of the decisions of the many agents who determine their level. It is a study of national economies and the determination of national income ."
examines the economy as a whole and answers questions
'What causes the economy to grow over time?',
'What causes short-run fluctuations in the economy?‘
'What influences the values various economic indicators and how do those indicators affect economic performance?