Introduction to Macroeconomics
Economics is traditionally divided into two broad areas − microeconomics and macroeconomics. Microeconomics is concerned with the behavior of individual consumers, firms, industries, and markets. For example, a microeconomist may study the market for smartphones and develop a model explaining the factors that underly demand, supply, and market price.
However, modern economies are highly complex entities, comprising many consumers, firms, industries, and markets that make billions of economic decisions on consumption and production every year. These decisions and their interactions determine the overall level of economic activity. The complexity of this decision-making process is such that we cannot hope to describe the economy in every detail. Hence, the need for macroeconomists to abstract from much of this detail by using models that highlight the most important relationships in the economy.