In the game, Tuscon's gain or loss is worth 5 NM. This is more than nearly every city.
Why is it so important in-game? Shouldn't it be worth 1 NM, at most?
I realize it's the whole Arizona Territory, but all of Arizona in 1861 was just a dusty outpost. Tuscon had a few hundred residents. New Orleans, by comparison, was the largest city in the South and one of the most important in the US. But it's worth less.
Is there a reason?