The emergence of the global oil trade flow began in the mid-19th century, coinciding with the discovery of oil in Pennsylvania and subsequent strikes in Russia and the Middle East. This period saw the transition from local extraction to international commerce as nations realized that petroleum offered superior energy density compared to traditional fuels.

As naval fleets transitioned from coal to oil in the early 20th century, the strategic necessity of securing foreign oil reserves became a matter of national security. This shift transformed distant deserts into critical geopolitical hubs, weaving a web of infrastructure that connected producers in the Gulf to consumers in Europe and North America.