Yes, however, you can usually deduct income taxes paid to your host country from whatever you owe the IRS. You will still need to file a return each year, regardless of whether you owe anything. http://www.irs.gov/faqs/faq13-7.html
no
GDP is the value of all the goods and services produced in the country in one year. Money earned outside of the country is not included.
Yes, it is.
Citizens and corporations must pay income tax on all earned money, even if it is earned overseas.
The same way as any other country on earth. Taxing its citizens.
yes state can borrow money from union and even outside the country
Germany has the largest economy, but the citizens of Liechtenstein make the most money (per capita).
It's National Income.
It's National Income.
To get a lot of money
United States
It is when a certain country has a high average amount of money, earned in a certain year by a person in a country.
Your money market is not tax free. All money that is earned as bank interest is considered as taxable money. This is unless you donated that money, or it is an out-of-country bank account.