There are exactly ZERO "countries" in the US. The United States of America (USA) IS the country. The USA has States. States are broken into Counties; some southern US States have "parishes". Counties are broken down into Cities. Cities have Townships. Each of these areas have political boundaries and political meaning.
1. The US IS a country. It does not have countries in it.
Over 50 countries
They have troops in 135 countries
one
a lot
There is no such continent known as the US, the US is a country.
2000
Hawaii is a US State and contains no countries.
The true answer is NONE. The US has military bases in over 150 countries but the US does not occupy any.
Puerto Rico is a US Territory and contains no countries.
Immigration
Many, but the highest debt it has is to itself...