If a country possesses large oil and gas reserves within its borders it shall

Export this resources

Explanation:

For example countries such as,

Iran Nigeria, The United States

are known to possess large oil and gas reserves and are involved in exportation of oil and gas resources. It is therefore legal for this countries to involve in foreign trade of oil and gas inorder to grow their economy.

If a country possesses large oil and gas reserves within its borders it shall exploit them in order to obtain economic benefits from them.

Explanation:

Natural gas and oil are two natural goods used for the manufacture of fuels, such as gasoline or diesel. These products have a high market cost, and an extraction cost that, if the reserves are numerous, is insignificant. Therefore, in the event that a country had fossil fuel reserves, the most logical thing would be for it to be exploited for export, which would enrich the country directly.

Countries like Arabia, the United Arab Emirates or Iran base their economies almost completely on the exploitation of these resources.