What is the official langauge of your nation?
Yes, telepathy
Do your people speak multiple languages?
No
Is there an indigenous language?
It is the indigenous language
What is the coolest sounding word or sound from your language?
none
How hard would it be to learn your nation's language?
It would be extremely hard for many people. As it doesn't involve words, scripts, instead there is thought transference and empathy, and as far as writing, they use art and symbology. One would have to be receptive to more subtle vibes in order to get an idea of how these people communicate. In addition they are not receptive to words and writing, but rather feelings and intentions. They are impossible to lie to.