That depends on the tax laws of the country in which that land and those buildings are located. You have not told us that so we can not provide you with a precise answer.
In the US the land "escheats" to the state.
It would allow farm ownership to continue.
It would allow farm ownership to continue.
It would allow farm ownership to continue.
You will need to own the mineral rights on the land, which are separate from ownership of the surface land.
Generally no. If you are a US citizen, you are obligated to pay US tax whether you work on US land, US water or outside the US. If you must also must pay foreign income tax, generally you are able to deduct this amount from your US tax.
There are a few states with no sales tax. I think Nevada is one of them.
It would allow farm ownership to continue.
It would allow farm ownership to continue.
It would allow farm ownership to continue.
It would allow farm ownership to continue.