Changing Pre-req Technology for French Chateau

[spilo]

By default, French Chateau requires Chivalry tech.

The only file which contains chateau at all, that I've encountered, is
C:\Program Files (x86)\Steam\steamapps\common\Sid Meier's Civilization V\Assets\DLC\Expansion2\Gameplay\XML\Terrain\CIV5Improvements_Expansion2.xml

But that file doesn't offer alteration of prereq tech.

WHICH FILE allows me to modify Chateau prereq technology?

 

[Chrisy15]

By default, French Chateau requires Chivalry tech.

The only file which contains chateau at all, that I've encountered, is
C:\Program Files (x86)\Steam\steamapps\common\Sid Meier's Civilization V\Assets\DLC\Expansion2\Gameplay\XML\Terrain\CIV5Improvements_Expansion2.xml

But that file doesn't offer alteration of prereq tech.

WHICH FILE allows me to modify Chateau prereq technology?

It'll be in CIV5Builds_Expansion2 or wherever the Builds are defined. But of course the way you should be doing this is making a new Mod and writing an UPDATE statement:

-- SQL
UPDATE Builds SET PrereqTech = 'TECH_' WHERE Type = 'BUILD_FRENCH_CHATEAU';

Or w/e the specifics are.