Abstract:This paper challenges the traditional ritual-focused interpretation of megalithic structures by introducing an engineering and economic perspective. Based on a comparative analysis of over 50,000 objects across six key regions—Korea, the Caucasus, North America, India, Western Europe, and North Africa—the author identifies a consistent modular grid with a step of 0.2 meters (the "span").The study demonstrates that dolmens functioned as standardized "secure storage units" with a universal "access port" of 40 cm. This standardization extended to domestic architecture and portable artifacts, including pottery and weaponry, ensuring compatibility for trade and transport. The author argues that this global uniformity was driven by market demands, "copy-paste" technological transfer, and the need for simplified tax (tribute) collection. Megalithic culture is thus redefined as the world's first unified industrial design system and logistics network.