The U.S. is a large country, so there is a reasonable chance that there are some smart people in the U.S. (if there weren't, that would be embarrasing, it is normal that a large county that spends a lot of money develops a lot of things made some good advancements(allthough half the things that are claimed by them aren't true) and they pump a lot of money (they don't have) into a lot of things, those are the only reasons the U.S. is "dominant" (if you can call it that way, the U.S. is forwarding itself as a great country, while there are numerous countries that are a lot better which don't have an arrogant big mouth).
Some stupid Americans really need to get out more, the world is not English.
Some are spelling mistakes, but a lot are right, like it IS spelled Afrika, Africa with a "c" is just wrong and makes you look stupid.