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.
US Economy. In 2016, China was the world's largest economy for the second year in a row. It produced $21.3 trillion in economic output. The European Union was in second place, generating $19.2 trillion. Together, China and the EU generate 33.9 percent of the world's economic output of $119.4 trillion.