Agriculture is the dominant primary economic activity in every nook and corner of the developing world. It has great potential for those, who are interested in the spatial distribution of agricultural system. Now the major trust of agriculture geography is on the description, interpretation and explanation of spatial variations of land use, cropping pattern, crop combination, agricultural productivity, agricultural realisation and regional inequalities in agricultural efficiency with the set objective to formulate strategies for the planning and development of agriculture, agro industry and backward areas of the world as well as India. Important Features • Documented with five dozen figures and tables. • Matter is placed in scientific and logical manner. • Subject matter related to agricultural based areas dealt in general and Vaishali region in particular. • Review of the literature, conceptual word and theme related to geography as well as agricultural geography and backward developing areas have been comprehensively explained and placed thoroughly. • It has been elaborates that how backward and developing areas' regional development and agro industrial activities relates and correlates each other and how positive correlation possible between these two aspect ? • Structure of agro industrial activities in a backward area and local participation in these activities is important for the development of a backward or developing area or a region. Which system should apply? It has explained enlarge in the reference of agricultural characteristics of Vaishali. • Potentiality of local agricultural resources examined very well, on which every developmental system depends. • It has been found that without the development of infrastructural network, agro industrial and backward as well as developing area development has never been possible either in third-world countries or developing countries. So in the concluding remarks it has been answered that which type of infrastructural network is necessary for the development of an agro based backward areas.