Also, a majority of people in pretty much every country don't know much about what happens outside of their borders.
The idea that Americans are particularly ignorant is a tired myth that deserves to die -- and if you've traveled the world and met people, you'd realize that geographical "ignorance" is widespread pretty much everywhere. Shocking, even. Sure, people in smaller countries know a bit more about nearby countries, but the American equivalent is a New Yorker knowing about Florida and Texas and California, since America's pretty huge.
So no, it's not true.