Roleplay thing

Im back after a year, and I want to do a roleplay thing. The game mode I want to do is all countries all in. You choose what country, you choose my decisions. Please lead me to a victory and make me a better player. Now what country do I use. Also btw I have never done a roleplay thing so it is gonna be kinda wierd. I will try to give daily reports but that will be kinda hard as the game runs on 4x.