advantages of macroeconomics

Macroeconomics helps you to understand how a economy is moving as a whole .
As in investopedia , In macroeconomics, a variety of economy-wide phenomena is thoroughly examined such as, inflation, price levels, rate of growth, national income, gross domestic product and changes in unemployment.
Private companies decide the investment area depending on macroeconomics data like inflation or sector growth ....
There are many uses of macroeconomics ...