This is a new work that I've started on, and I want to by publishing this to promote Custom Single Player Scenarios. I will use these Home Cities in Future Scenarios.
Copy and paste this folder into:
Program Files -- Steam -- steam apps -- Age of Empires III -- bin -- Campaign
Then from the editor select a civilization, then Reset HC and then press Set HC, and select Chomps 2, then 207 Fr, 208 Fr, 209 Am, or 2010 Am Iro.
Thus: Campaign -> HCs -> Chomps 2 -> File
If playing Black Family estate then you need to use this trigger: Set Tech Status, active, XPSPOUnlock2 for Iro/Americans, XPSPCUnlock3 for Americans, or XÅSPCUnlock4 for Sioux/Iroquois.