The World Oil Market Chronology dates back to the early 19th century when the first oil wells were drilled in Pennsylvania. Since then, the oil industry has grown to become a global phenomenon, with oil production and consumption taking place in almost every corner of the world. The chronology outlines the major events that have shaped the oil industry, from the first commercial oil well in 1859 to the present day. It also includes the development of new technologies, the emergence of new players in the market, and the impact of geopolitical events on the industry.