A system of trade characterized by the establishment of fortified locations by European powers, primarily along coastal regions, to control commerce rather than large territories or populations defines a specific type of imperial structure. These outposts, often centered around strategic ports, facilitated the exchange of goods between Europe and Asia or Africa. The Portuguese in the Indian Ocean during the 16th century offer a prime illustration of this system; they sought to dominate the spice trade through control of key access points and the imposition of taxes on merchant vessels.
The significance of this approach to commerce lies in its relative efficiency. It allowed European states to exert considerable influence over global trade networks without the administrative and military costs associated with extensive colonization. By controlling vital waterways and trade routes, they could extract wealth and resources while minimizing direct conflict with established land-based empires. This system played a critical role in the rise of European economic dominance and the reshaping of global commercial interactions.