The Principality of Andorra is one of the oldest countries in the world with a history that dates back to the year 1278 when the paréage agreement was signed, establishing it as a co-principality under the joint suzerainty of the Count of Foix (whose title would eventually pass to the French head of state) and the Bishop of Urgell in Spain. Andorra is 745 years old.
The country of Andorra is 746 years old, founded in the year 1278.