摘要：The aim of the paper to close the answer on a paradox question: world crises have a tendency or they are chaotic and unpredicted in their nature. Research goals are: 1) to consider the chronology of crises and its theories in the history; 2) to consider main economic indicators over long time period and to investigate its nature; 3) to use mathematical approach for testing causality effects between main economic indicators and main "initiators" of crises from the historic perspective point of view. Expected results are to show the main impact of USA economic situation on the world economic cycles. Our belief is that crises are important for the economic existence of humanity as the cardiogram for human being living.
