
Oil became the dominant energy source of the twentieth century following the discovery of vast petroleum reserves and the development of efficient extraction methods. The industry transformed global trade, transportation, and industrial production beginning in the 1850s.
By 2023, global crude oil consumption reached approximately 100 million barrels per day. Oil powered automobiles mass-produced by Henry Ford's assembly lines after 1908, fundamentally altering urban development and commerce across Europe, North America, and beyond.
The 1973 oil embargo, initiated by Arab nations against Western supporters of Israel, demonstrated petroleum's geopolitical importance. This crisis prompted energy conservation efforts and accelerated research into alternative fuel sources, establishing oil's central role in international relations and economic policy throughout the modern era.
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