Flagmod Europe!
As of 28.11.2021, this mod has been officially declared as abandoned. This means that 1.12.2 version or any 1.7.10 update should not be expected. If you'd wish to pick it up and work on it, feel free to contact me for details.
The best mod for Minecraft which adds flags! What you can do with them? There are many possibilities, like build some administration buildings! When it's on the server, you can highlight your nationality by placing flag where you want! On tower, in front of your house, on the wall... just everywhere!
Custom flags
Mod supports "Content packs". For that you need to make a pretty basic mod.
Contact
If you have any questions, ask me on Twitter.