Economics is a branch of the humanities that deals with the performance, structure, behavior, and decision-making of an economy as a whole, whether it is the economy of a country, the economy of a region, or the global economy. The economy tries to understand the performance of the whole economy by examining general indicators such as GDP, unemployment rate, price index. In this regard, economists provide models to explain the relationship between factors such as national income, production, consumption, unemployment, inflation, savings, investment, international trade and international tax in the economy. Micro and macro economics are the two main branches of economics. Macroeconomics is the study and analysis of general economic phenomena and variables (variables such as the total level of production of society and its constituents, the general level of prices, the level of employment, economic growth and average wages for all workers in the economy), examining the relationship between They are intended to anticipate and adopt appropriate policies in the future, and to correct past economic policies and decisions. Because macroeconomics is the study of economic variables at the level of the whole or society, and on the other hand, economic issues at the community level in many cases take on non-economic dimensions, especially socio-political and even international, so the study of macroeconomics is important in this regard.