^I don't believe you are African, but that is just your latest persona in a long line of trolling personas. But it does not matter - your posts are too similar to another American Christian poster for me to believe it is a coincidence.
Your reasoning (like most troll arguments) if fundamentally flawed. Where Christians, Muslims, Buddhists etc choose to live is a matter of choice or an accident of birth. What religion people choose is similarly either a choice or a factor of birth-right. The religion of the poltiicians in the country you were born in or choose to live, or the economic circumstances are one factor some may choose to look at. But there are ex-pats in China, Dubai, Europe, America, Asia etc etc who are working in a foreign land and perhaps in countries with different religious majorities than what they follow.
If you are attributing the past economic success of America with Christianity, will you also attribute the decline of Greece, Italy, Ireland etc also to Christianity? Right now, Malaysia is pretty much a better place to be than Ireland - economically speaking. Can we say Islam is superior than Catholicism based on this point?
The honest thing to do if you want to compare religions is to compare like with like - compare religious teaching with religious teaching.