Macroeconomics is the study of the market economy as a whole, and there are two basic questions: how are the parts of the whole coordinated, and how does it change? A micro trajectory was the building block of a meso trajectory, and a meso trajectory is the building block of analysis of generic macro coordination in terms of how the whole macro economic system is coordinated in consequence of meso change, which shall be the subject of this chapter. In Chapter 6 to follow, we shall then use this general generic analysis of macro coordination as a building block (a regime) for analysis of macro growth and development as an ongoing historical process. But in this chapter we shall be concerned with the analysis of macroeconomic coordination in consequence of a meso trajectory.