innis depicted the relationship between regions of canada as one of "heartland" to "hinterland": the periphery, or hinterland, is dominated by the core, or heartland. because the heartland was dependent upon the search for and accumulation of staples (which were located in the hinterland) to perpetuate the economy, it sought to gain economic and political power by exploiting the hinterland. historians continue to use elements of the innis model, applying it for example to british columbia. that province's economic structure exemplifies the "core-periphery" structure of intra-regional relationships. the core is metropolitan vancouver, with its concentration of corporate management and transportation functions and manufacturing growth. it dominates an underdeveloped periphery that depends on production and export of staple commodities.