The empires of the ancients are a crude tool of history

In the actienent worls of different tribes, languagias and slightly cultivated landscapes Empires had a role of the crude tool to forse changes: concentrations of rents, with the focus on infrastructure (roads, dumbs, canals), fortifications, cult centers and palaces. Concentration of investments went to dominationg tribe at the expence of taxes from all nations inside the states. Empires sped up the exchange of information, innovations, common languages. Critical view of empires as aggressive force led to focus on political and military role of empires and low attention economic aspects of their activity. Some coefficient of usefulness between hostile creation and destruction of empires may be of interest. Some technological and cultural developments were resulted from management and the degree of survival after collapses of empires. We distinguish the agricultural and nomadic empires, trying to show the life cycle of empires between XIII Century BC and 5 C. (Fall of Rome), before Christianity and Islam came as a factor. And we observe the process of selection of convenient periods of the past for establishing “imperial” or “contra imperial” cultural codes and historical memory.