I know this isn't directed at me. But I still want to adress it.
My contention of the OP is that the civs chosen for Civilization4 were done so for marketing purposes. The main drive behind this is Name Recognition, One of the primary motivators with that is Historical influence, but other factors include marketshare (Korea), popular cultural references (Zulu), resistance (exclusion of Israel), etc. As such all the civs included make sense, and I don't see why people really have a problem with any of them. Except the HRE, which is removed in Legends of Revolution

. Which is a side point, it's not like it's hard to remove a civ if you really have a problem with one (you change the 1 to a Zero in the bPlayable tag in the CIV4CivilizationsInfos file).
I also find these "The US Doesn't Belong" posts to be absurd. As stated repeatedly the US by any measure has earned a spot in history as a great nation (whether they are a good nation is irrelevent, and I'm not interested in debating ethical standards, we have Stalin and Mao as leaders for Pete Sakes!), this isn't even disputed by most; instead they make assinine proposals that there should be some temporal limit, which would eliminate other worthy civs, like the Mongols. Such foolishness just irks me