The world in 2057

Is it possible that USA is on a slowly descending course and will be replaced with EU as the next leading super power? I see three alarming tendencies:

1) Protectionism. Not only is it bad for the economy, it also breeds mental isolationanism.

2) Xenophobia. If you got rid of all illegal immigrants working in "the breadbasket" and enforced zero tolerance against anyone trying to enter the country illegally, even to make a honest living, then the food prices would skyrocket.

3) Theocracy. If you want to have a separation of state and church, then you must keep them separated.

If USA isn't breaking these tendecies like right now, then it's doomed. My guess is that in 2057 is EU a superpower far more powerful than anyone could've imagined. It rose to superpower status during the colonial wars in China on african soil. EU is allied with the African Union and are trying to contain the threat from the pan asian coalition headed by Russia and China.

you guys don't think maybe culture, language and general level of education plays a part in IQ tests?
different cultures have different focuses, these shape peoples way of thinking and reasoning, and thus how they score on IQ tests. In  a small society in some island in the pacific they don't have words for future and past, only the now, which means that those very simple concepts doesn't make sense to them, i don't think it's that unlikely that similar things play a part in IQ testing.
Sure, you can't eliminate eugenics as a factor, but i think there are other factors than just that, that play a part in determining the general IQ of a population.