No, Americans can be pretty ignorant to anything that they don't need. For example, my mother is not a stupid woman, but she is not able to do fractions. She has no need to know them (so she says), and she refuses to let me teach her. She has asked me, "how much gas is left in your car?" for me to respond, "about 3/8th of a tank," just for her to inquire, "is that more or less than half?" Neither of my parents, including my father who has a college education, could name more than (I would guess) 15 world flags. 20 at most.