Sorry, lack of clarification in terminology. Building a city adjacent puts a dotted colored border around it equivalent to walking over it with a unit. You get the flat bonus from that. You have to claim the tile with the city to get the %.
Sorry, lack of clarification in terminology. Building a city adjacent puts a dotted colored border around it equivalent to walking over it with a unit. You get the flat bonus from that. You have to claim the tile with the city to get the %.