Macroeconomics is a branch of economics that studies economic phenomena at the level of a country or a region. It focuses on the aggregated behaviors of economic agents, such as consumption, investment, exports, and imports. In this course, we will explore the main objects of macroeconomics.

GDP is one of the most important indicators of macroeconomics. It measures the value of all goods and services produced in a given economy over a specific period, usually a year. GDP allows for the evaluation of a country's economic growth, comparisons of living standards between nations, and tracking the evolution of economic activity.

Inflation is the rate of change of prices of a basket of goods and services representative of the economy. It measures the loss of purchasing power of money. Inflation can have consequences on the economic and social stability of a country. Macroeconomics studies the causes of inflation, its consequences, and the monetary and fiscal policies that can be implemented to control it.

Unemployment is the number of people able to work but searching for a job and available to occupy one. It is one of the main indicators of a country's economic and social situation. Macroeconomics studies the causes of unemployment, its consequences on the economy, and the economic policies that can be implemented to promote employment.

Economic policies are measures taken by governments to influence the economy of a country. They can be monetary, fiscal, or structural. Macroeconomics analyzes the effects of these policies on economic activity, inflation, unemployment, and other macroeconomic variables. It also seeks to evaluate their effectiveness and propose recommendations to improve economic performance.