This 1:2 relationship regarding the periods of war and peace, coincide with a very approximate rhythm in the economic juncture. Here each period of crises is followed by one of prosperity of a double duration. This is based on good human, physiological and psychological reasons. After a stage of extreme tension, danger and scarcity, double time would be needed to recover, rest and gather new energy. This rhythm has more probability of fulfillment than the ancient formula that one same generation does not go two times to war. There exists the period of centralization and decentralization. At the beginning, great wars, as the First World War, have an annexing and centralizing character but, afterwards, they end with the dismemberment of ancient and great empires and with the formation of numerous new states.� After the recognition of the independence of the United States of America by England in 1783, a first centralizing period begins in 1787, that goes beyond the French Revolution and the first decade of the Napoleonic Wars. Many small states disappear, the few states founded by Napoleon are merely vassal states. But in 1810, a new series is constituted, first in South America, where up to 1822 independent states begin, and afterwards in Europe with Greece and Belgium (1830). In 1833, with the German Customs Union, a centralized period begins that ends in the union of Italy and Germany, period that extends until 1871. But starting from then and, especially in Central and Eastern Europe, the tendency towards the independence of nations is imposed: creation of the Balkan States (1878), independence of Czechoslovakia and Yugoslavia, resurrection of Poland, foundation of the Balkan States, Syria and Irak (1.918-1.920). Afterwards, there comes the other centralistic wave that leads Italy to annex in 1936; Germany does the same with Austria and Czechoslovakia (1938-1939), and Russia takes over the Baltic States during the Second World War. Starting in 1947, a great movement of independence begins: India, Pakistan, Indonesia, Morocco, Tunisia and the foundation of Israel.� Together and during a period of more than 170 years, three periods of union have alternated with each other with three periods of separation: PERIOD�������������������������������������� TENDENCY������������������� DURATION 1787 - 1809���������������������������������� � Union�������������������������������� 23 years 1810 - 1832���������������������������������� � Separation������������� ������������23 years 1833 - 1877���������������������������������� � Union�������������������������������� 45 years 1878 - 1921���������������������������������� � Separation������������������������� 44 years 1922 - 1946���������������������������������� � Union�������������������������������� 25 years 1947 - ������������������������������������������ ��Separation��