Basic question, I don't know why I can't remember where this is located but..

How is the prereq technology for farms (and other improvements, for that matter) written into the XML? I want to have farms enabled much later in my tech tree.

Thanks in advance!

It's the Civ4BuildInfos XML file found here:

Firaxis Games\Sid Meier's Civilization 4\Assets\XML\Units

It's the Civ4BuildInfos XML file found here:

Firaxis Games\Sid Meier's Civilization 4\Assets\XML\Units

...\CIV4BuildUnits!!!

Sheesh!! Can't imagine why I didn't remember to look for improvements in the units' folder! Thanks so much, woodelf. (And thanks for the instantaneous response, too!)

That XML file is in the least intuitive spot of all.