Railroads!
I am firmly convinced that the path to victory in Civ4 (and every Civ game) is rooted in railroads.
A fun meta-game for me to play is to watch the Count’s wife whenever she is playing Civ and ask her how soon is going to be until she can build railroads. If she has discovered railroads, the game is to ask to either build railroads or build MORE railroads.
Every tile that lacks the life-giving iron horse is a wasted one.
When we started plotting out our 1840s American frontier arc, I quickly realized that a fight on the top of a train would have to be part of the proceedings.
So, welcome to train fight week.
–Geoff