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.
The Current Top Economies of the World. As of 2015, some of the largest economies in the world include the United States, China, Japan, Germany, the United Kingdom, France, India, Brazil, Italy and Russia. Most of the economies in this top 10 list are developed countries in the western world, while China, India, Russia and Brazil are emerging market economies.