The United Kingdom of Alba and Hibernia dates to Roman times, when the Picts descended from Alba pushing the Romans back into the sea in 500 AD. Saved from major Angle, Saxon and Jute invasion by the pressure of the Muslim invasion of Europe, Gaelic is the mother language of these northern isles, nevertheless borrowing heavily from Arabic and other former invaders. The Celts (as they call themselves) of Alba and Hibernia invaded the Caliphate of Londris and established the Principality of Anglia, a move supported by their allies and the Peace Treaty of Limotas following the Continental War.