I found Iperios and it is a modded server where you can make your own nation. You get to decide your government style and set laws and ranks. If you do not want to make one you can join a nation that already exists.
It runs on All the Mods 10 ATM10 version 6.1. You have to get whitelisted through their Discord first. After you get in a staff member helps you and gives you a beginner kit so you can start playing.
WebsiteDiscord