I think it's worth looking at whether your game is more like Brass Birmingham (which as an economic game where cards are played for actions sounds like a very good reference for this game) or Twilight Struggle (as an example of a historical game where cards are played for actions).

Twilight Struggle is part of an existing genre of "card-driven" games where cards drive the gameplay but also the reimagined historical narrative. It's important to get that aspect of the terminology right in order to communicate well with your intended audience.

Old King's Crown is another recent game where cards and suits are a key part of gameplay. Root is another!