مسايسة, فاطمة الزهراءمسعودي, سفيان إبن الدينسي محمد, كمال2024-03-252024-03-252022http://dspace.univ-temouchent.edu.dz/handle/123456789/3283مذكرة مقدمة ضمن متطلبات نيل شهادة ماستر أكاديمي تخصص مالية المؤسسةThe main objective of this study is to provide a comprehensive concept of the business cycles that have become associated with capitalist economic activity, and whose manifestations and characteristics punish the economy in four phases, namely, the phase of a peak, reccession , a trough and expansion. In addition to addressing the most important theories that have been adopted and whose causes have been studied by economic thinkers, each according to his opinion. We will study I cross correlation based on several variables as this model helps us to study the relation between gross national expenditure and the variables( Household spending , gross fixed capital formation , spending and trade balance and final consumption expenditure) where we will conduct an analytical study of the variables mentioned during the study period (1971/2019), and we have concluded through our study that the macroeconomic variables are of great importance in analyzing the reality of growth and that oil is the Algerian path, the leader of the economy The latter has become dependent on oil revenues and prices in the world marketothereconomic cycles , business cycle , cross-correlation , oil price,gross national expenditureThesis