Crude oil is One of the most important aspect for geo political changes around world. Developed countries like United states of America and Japan and populated countries India and china are Biggest Consumer are Crude oil in todays world.

The only country America understands importance of oil .Then president of USA  Franklin Roosevelt meet the King of Saudi Arabia  Abdul Aziz ibn Saud near Suez canal on battleship called Quincy. To deal about crude oil the deal says America have right on all oil which is drilled from Saudi Arabia. To get the Right of drilled and selling, king is shower with gift like air plane and accepting terms and conditions of payment which are laid by king.

All rights to drill oil from Saudi land and selling it were got to standard oil of California. after that all oil companies from America, united kingdom are making deal with countries of middle east and Africa. most of the countries of middle east and Africa have nature resources in form of  fossil fuel crude oil and natural gas.

That time Countries of middle east and Africa don't have Resources and techniques to drew oil form oil field. They are totally dependent on developed countries like America and united kingdom.

The Birth of Organization called OPEC full form Organization of Petroleum exporting countries having headquarter in Vienna, Austria. The Oil companies are getting heavy profits than nation which are having  oil of natural gas. Every country in middle east or in Africa have separate deal with oil companies. so strong and dominating nations getting more or desirable share than other nations that don't have political stability. Because of this disputes take place. so to have common and fair price of crude oil and natural gas. OPEC is formed. This step is Going to affect oil companies. Know a days OPEC is fully controlled by Saudi Arabia. 

In 2007, United states of America decide to go oil independent country by introducing bill called energy independence and security act,2007.n 2015 America becomes oil exporter country from oil importer country.

If their is increase in crude oil prices countries have to pay more. And in dollars. dollars are backed by gold. The economic budget financial year based of oil prices take into consideration that oil price are not getting beyond certain value. if oil price increase government have to pay more and if the crosses based prices which take into consideration in financial budget. It will affect economy of the country.

In conclusion, We need to shift from conventional energy sources to other Sources. Oil Changed the game of geopolitics and have to find independent energy source.