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.
Europe is bigger than the US. As a single country, the US is the biggest economy in the world. But given its close ties, you could easily argue that the countries of the European Union make for one big economy. Indeed, you would be arguing that it's the world's largest economy.