How do they supply oil in different parts of the world?

Oil is supplied globally through a complex network of extraction, refining, and transportation. Major oil-producing countries, like Saudi Arabia and Russia, extract crude oil from reserves and transport it via pipelines, tankers, and railways to refineries, where it is processed into various petroleum products. These products are then distributed to markets worldwide through a combination of shipping and local distribution networks. Additionally, geopolitical factors, trade agreements, and logistical capabilities influence the flow of oil across different regions.