You must be young. The Iranians and other parts of the middle east have referred to us since at least the 80s, and probably before.
When we brought a bunch of Nazis in after WWII and installed them in positions of importance (like heading NASA by Wernher von Braun) I think we gave them a pretty reasonable argument.
Still not memorized. 7,8,9 still involve doing some quick count by number to get the answer (or using the finger trick for 9)