sentences:  He considers megaeconomics as his greatest scientific achievement.According to the developments in the economic theory and its flexibility being dependent on changing circumstances and changing world, Bagratyan argues, that along with microeconomics and macroeconomics, there must also be a place for "megaeconomics", where economies are confronted in another, more global dimension.Megaeconomics should be considered as an instrument of finding stable equilibrium points for all the economies considered as one whole, in terms of interactions and influences on one another, in the globalizing world of the 21st century.