Answer:
Option: The discovery of oil made some Middle Eastern nations wealthy.
Explanation:
The oil export in the Middle East started in the 20th century when the British were surveying for energy sources and found oil in Iran. British made Persia (Iran) their regular supplier of oil. After World War II, Europe recovery from the war and blooming America economy pushed the need for oil from the Middle East. Iran started the process of nationalization of oil in the 1950s so that the local government could seize control over oil resources and regulate the prices. Ultimately, different nations also followed this policy.