OPEC is the Organization of Petroleum Exporting Countries. It was founded in Bagdad in 1960 and has currently 12 members. OPEC’s aim is to regulate the amount of oil that member nations produce and to keep prices at a steady rate.
A bank is a company that works with the money that the people give it. If you give your money to a bank, it not only protects it but pays you interest so that it can work with the money.
Switzerland is not only famous for chocolate and watchmaking but also for its century-old banking industry.