The US is also unusual in the enormous scale of religious fundamentalism. The impact on understanding of the world is extraordinary. In national polls almost half of those surveyed have reported that they believe that God created humans in their present form 10,000 years ago (or less) and that man shares no common ancestor with the ape. There are similar beliefs about the Second Coming.
You can forgive your leaders for not knowing the intricacies of Islamic history. You cannot forgive them for not knowing their own. And when you look at American democracy, where did it start? It started, if you need to pick a point, at Runnymede in 1215. We have now been at this process, we and our English-speaking allies, for 800 years.