The largest source of income for the federal government is the taxes!
Specifically, among taxes, the biggest source is the individual income tax (that is, every person who works places some percentage of their salary in the hands of the government) and the second biggest is the tax payed by the employers when they employ people (payroll tax)
<span />
<em>Because the prices are influenced by the action of a government or in a direct way. They are part or the money supply, but the money is not about the government. But they can control the money of a country.</em>
<em>The money are always exchanged for goods and services, so this is the price of the money. </em>