I'll tell you a story:
One summer, I went on vacation in Europe. I rented a car and hopped from friend to friend, touring around.
When I came back, one of my workmates asked me:
"So you drove quite a few miles! How did you cope?"
"What do you mean 'cope'" I replied
"Well, Europeans drive on the left. Wasn't it confusing?"
"W...What?"
Turned out, the dude was totally convinced only Americans drove on the right.
Americans are fucking clueless about everything going on outside of their country, and largely clueless about what goes on inside of it too. They're honestly shamefully ignorant.