Currently, archaeology uses dating systems that are not comparable, based on historical chronology, dendrochronology, and two types of radiocarbon dates: AMS and LSC. However, the latter suggest, as a rule, earlier dates. Contrary to this, the intervals based on historical chronology and dendrochronology are quite comparable. The intervals obtained by means of Bayesian statistics of AMS dates are also very close. The problem is aggravated by the fact that the use of the standard typological method does not allow complexes to be synchronized accurately, since the duration of the existence of some type can be different in two areas. More accurate evidence can be taken from the first appearance of any cultural complex as a result of migration. Such migrations were usually forced by natural disasters. Correspondently, the latter can be used as a chronological benchmark, which makes it possible for the processes taking place in remote areas to be connected. Based on all this, a chronological system of the European EBA, eastern European MBA and of the so-called "2200 even" is suggested. The obtained interval becomes younger and shorter than those based on the radiocarbon chronology.