From a regional perspective, the structure of a regional economy can be described by its production, income distribution, consumption of goods and services, savings and investments, and trade. A SAM gives a comprehensive picture of the ﬂow of income among households, primary factors of production (land, labor, and capital), and economic institutions. A SAM has two principal objectives. The ﬁrst is concerned with the organization of information, usually information about the economic and social structure of a country or region in a particular year, though the spatial and temporal dimensions can change. Once the data in a particular country has been organized in the form of a SAM, they present a static image that can reveal much about the country’s economic structure. The second objective of a SAM is to provide the statistical basis for the creation of a plausible model (King 1985).