Nigeria joined the Organisation of Petroleum Exporting Countries (OPEC) in__________

Nigeria joined the Organisation of Petroleum Exporting Countries (OPEC) in 1971. OPEC is a group of countries that produce and export oil, and it was founded in 1960. Nigeria, which is a major oil-producing country, joined OPEC a few years after its independence from British colonial rule in 1960. As a member of OPEC, Nigeria participates in discussions and decisions that affect the global oil market, such as setting production levels and prices. Joining OPEC also provided Nigeria with a platform to strengthen its relationships with other oil-producing nations and to have a greater say in the management of the global oil industry.