Maybe because you are not Bulgarian
![*wink*](https://forum.imperiaonline.org/int/Smileys/classic/wink.gif)
But if you really wanted to - just go below the english forum and click on the link Посетете българския форум (Visit the Bulgarian forum)
If you would want to post there, you need to start another account I believe (it can be with the same username and password)