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.
But with a population of 1.36 billion people, China really should be the world's largest economy, argues Matthew Crabbe, author of Myth-Busting China's Numbers. He's spent more than 20 years looking at the country's figures and the facts behind them. More or Less: Behind the stats.