There will be an age at which it can be nothing other than a gift, so no tax would be applicable. However, if you're over 18 and it represents more than pocket money then you should technically...
In most instances, no income tax is due on life insurance proceeds. (A rare exception would be if the policy was sold, making it a capital asset. Very rare, though.) There is no estate tax on the...
Sure.
A lot of the money many people make is from foreign sources...many companies and busiensses are foreign...the income tax is on what you make, not where it may have originated.