The United States has bilateral copyright agreements with a number of nations. So... probably most of the whole world, but the actual reality is complicated. So

The United States has bilateral copyright agreements with a number of nations. So... probably most of the whole world, but the actual reality is complicated. So complicated, in fact, that the number in "a number of nations" is not currently determined. https://en.wikipedia.org/wiki/Bilateral_copyright_agreements_of_the_United_States https://en.wikipedia.org/wiki/Bilateral_copyright_agreements...