This mod aims to bring the Mormon Religion to Civ IV it also adds Deseret as a playable country.
This is the Civlopedia for Deseret. As you can see it is not finished. As the unique unit and building is the same thing as America. But the Leader is Brigham Young, and thier starting techs are Mysticism and agriculture. I think that is right. That will not be the final flag, it is just their to replace the big Pink square.