Vaporizer pens can be used to inhale a number of different materials. Often, people call vaporizer pens by names that indicate what they are used to vape. The three main types include: - The oil vaporizer pen, which is also called an oil pen or oil vape pen.
The United States is the world's largest economy with a GDP of approximately $18.56 trillion, notably due to high average incomes, a large population, capital investment, moderate unemployment, high consumer spending, a relatively young population, and technological innovation.
Nigeria becomes Africa's biggest economy. Read more about sharing. Nigeria has rebased its gross domestic product (GDP) data, which has pushed it above South Africa as the continent's biggest economy.