Oil is still the main source of energy. Indeed, this raw material occupies 37% of the energy consumed throughout the world. Therefore, which are the most important oil countries? The biggest oil producers Saudi Arabia is one of the biggest oil producing countries in the world. Moreover, the 11.75 million barrels prove its ability to extract hydrocarbons. Moreover, the country occupies 13% of world production. Second, the United States is one of the leaders in hydrocarbon production. In fact, the...