Iperios is a modded server where players can create their own nation and run it how they want. You can set up your own government style and make laws and ranks for your people.
If making a nation sounds like too much you can just join a nation that already exists and be part of their plans.
The server uses All the Mods 10 version 5.4. To join you need to get whitelisted through the discord then a staff member helps you get started and gives you a beginner kit.
WebsiteDiscord