Winterkeep - Book 4 - Kristin Cashore

Four years after Bitterblue left off, a new land has been discovered to the east: Torla; and the closest nation to Monsea is Winterkeep. Winterkeep is a land of miracles, a democratic republic run by people who like each other, where people speak to telepathic sea creatures, adopt telepathic foxes as pets, and fly across the sky in ships attached to balloons.