Why was the replacement of feudal political fragmentation with effective central government a key change that was favorable to capitalist economic development?

feudalism an inevitable stage in the development of capitalism. Commercial capitalism existed in various countries in the ancient world without a prior stage resembling the feudalism of the Middle Ages in Europe. Industrial capitalism came into existence in the United States, in Canada, and in Australia without a prior stage of feudalism. By a rather heroic oversimplification, the precapitalistic era in Japan might be termed feudalism. 

The role of the Sociologist is to research the way society is organized around power structures, groups and individuals. Sociology can study society with a wide variety of focuses. ... Many people do not realize that Sociology actually has a profound impact on society both in an overt manner as well as behind the scenes.