So yeah couldn't find space or time to put it in the seconds chapter so I'll explain it here
The Eu4 system works like a normal Eu4 game missions trade all that stuff just watch a couple Eu4 episodes and you'll understand a little Eu4 is an extremely complex and confusing game so don't expect me to get everything correct now I'll mainly use the trade mission and development systems form the game since I'm bad at expanding the military and conquests things and I like them more