Thanks for all the praise!
A word about updates: My goal with this story is this. This is not just a civ 4 story. It is much more than that. So, while I will be loosely following the game I play, there will be updates that take place on Earth, on other planets, and even in deep space as well as on Mars. I want to create an entire fictional universe out of this story, chronicling the rise of mankind into an interstellar power, and dealing with a changing earth.
About the superpowers, here is my opinion on them.
UFWH: This is one that could be able to fit this story's world, but it seems kinda big to be honest. In universe, Canada has never quite recovered from the Crash, and during the Crash many Latinos fled en masse to the US, Brazil, Yucatan, and few other places. I plan on having plenty of events happen in Canada...(OOC:

)
SAE and NAU: No problems here, there could be an African Cold War between these two powers, or something of that sort.
EU: Again, no problems here. It could be in a cold war with Russia at the moment.
IRF: Eventually, I will describe the Siberian War of the 2060s in detail, but at the moment just think that Russia was heavily damaged by the war and lost great amounts of land, but it inflicted even heavier damage on China.
NAE: I have no problems with this, save two. What about the Sunni-Shiite split, and what happened to Israel?
AC: I can see how China obtained Central Asia, but this is probably the power I have the most problems with. India could easily muster up enough troops to stay independant from China. (OOC: Even as early as 2025, India's population could outnumber China due to India's complete lack of population control laws) Especially after China's cities were all demolished during the Siberian War.
FJI:How Japan got Eastern Russia is beyond me, but other than that no issues.
PU:No problems here.
I would like to make a definitive timeline of the events from 2008 to 2140, to clear up any issues.