oh i see 3c over 3a , I didn't get that , then i'd say maybie if you liberate a coast line of city state with your fleet that is also explorating , you will liberate cities in areas where you don't plan to keep a military presence or if you don't want to have to deal with the AI worrying about your influence if you are not going toward diplo win you may be willing to pass on votes or ressources to keep a trade partner not jealous about your influence, i admit that is far fetch but sometimes you got to pull up some stuff to deal with those pesky AI