DonStamos
Mobster Inc©
Stretching the definition of Civ quite a bit here, but it was the first one that managed to generate ideas in my head. Feel free to disregard if it doesn't fit the intended scope of a civ.
Chicago - Al Capone
UA: Untouchable
Whenever a rival Civilization denounces you, all cities enter WLTKD. Your units gain a 5% bonus to their Combat Strength for each active Denunciation against you, to a maximum of +30%. While a city is celebrating WLTKD, it generates Great Merchant points equal to 10% of its total Gold output.
UB: Speakeasy
Replaces Caravansary. In addition to the benefits of the Caravansary, gain +1 Gold for each bonus and luxury resource worked by this city and contains a Merchant specialist slot.
UU: Bootlegger
Replaces the Great Merchant. Gives adjacent units a bonus to their combat strength as if it were a Great General. May be expended to begin WLTKD in a city.
Chicago - Al Capone
UA: Untouchable
Whenever a rival Civilization denounces you, all cities enter WLTKD. Your units gain a 5% bonus to their Combat Strength for each active Denunciation against you, to a maximum of +30%. While a city is celebrating WLTKD, it generates Great Merchant points equal to 10% of its total Gold output.
UB: Speakeasy
Replaces Caravansary. In addition to the benefits of the Caravansary, gain +1 Gold for each bonus and luxury resource worked by this city and contains a Merchant specialist slot.
UU: Bootlegger
Replaces the Great Merchant. Gives adjacent units a bonus to their combat strength as if it were a Great General. May be expended to begin WLTKD in a city.