Yes. And Yes.
The mods should be installed to a sub-directory in your conquests folder. Then you access the mods through the Civ-Content menu option. The default rules are kept in a different place, and generally are not affected by mods.
The mods should be installed to a sub-directory in your conquests folder. Then you access the mods through the Civ-Content menu option. The default rules are kept in a different place, and generally are not affected by mods.