This mod removes the free envoy bonus that Civ's get when being the first to encounters a city state.
Special thanks to Xeribulos.
Unzip the City States - No Free Envoy.zip file to "..\Documents\My Games\Sid Meier's Civilization VI\Mods"
It should create a folder named "City States - No Free Envoy"
Go in "Additional Content" and activate it by checking the box near "Activate Mod" then click "Back" and launch a game.
City States - No Free First Encounter Envoy 1.0
Removes the free envoy bonus for first civ that encounters a city state.