Category
page 1States and territories established in the 910s
Kingdom of Leon
independent medieval kingdom in the northwest of the Iberian Peninsula (910–1230), capital León

Goryeo
Goryeo (; ) was a Korean state founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until the establishment of Joseon in 1392. Goryeo achieved what has been called a "true national unification" by Korean historians as it not only unified the Later Three Kingdoms but also incorporated much of the ruling class of the northern kingdom of Balhae, who had origins in Goguryeo of the earlier Three Kingdoms of Korea. According to Korean historians, it was during the Goryeo period that the individual identities of Gogurye
Kingdom of Galicia
kingdom in Iberia
Duchy of Normandy
former European sovereign state, then dukedom of France
Duchy of Swabia
duchy of Holy Roman Empire (909-1268)
Southern Han
one of the Ten Kingdoms of 10th-century China, centered on Guangdong Province
Bali Kingdom
series of Hindu-Buddhist kingdoms that once ruled some parts of the volcanic island of Bali
Sebasteia
theme of the Byzantine Empire
Yan
short-lived dynasty near present-day Beijing