States and territories established in the 900s

Shia Islamic caliphate (909–1171)

Khitan imperial dynasty in East Asia (916-1125), controlling northern and northeastern China, Mongolia, Russian Far East and North Korea

(907-1805) duchy of Holy Roman Empire

one of the Five Dynasties of China

one of the Ten Kingdoms in 10th-century eastern and central China

Wuyue (; ) was a dynastic state of China and one of the Ten Kingdoms during the Five Dynasties and Ten Kingdoms period of Chinese history. It was ruled by the Qian clan of Haiyan (海鹽錢氏), whose family name remains widespread in the kingdom's former territory.

one of the 10 Kingdoms of 10th-century China, centered on Sichuan

Lykandos or Lycandus (), known as Djahan in Armenian, was the name of a Byzantine fortress and military-civilian province (or "theme"), known as the Theme of Lykandos (θέμα Λυκανδοῦ), in the 10th–11th centuries.

one of the 10 Kingdoms of 10th-century China, centered in present-day Hubei and Hunan

Dachanghe (), possibly Da Changhe or Changhe, was a monarchy from 902 to 928 in modern Yunnan, China. Founded by Zheng Maisi (鄭買嗣), it was the successor state of Nanzhao (738–902), whose ruling Meng (蒙) family was mass-murdered in a bloody coup by Zheng. The Zheng family suffered a similar fate 26 years later at the hands of Yang Ganzhen (楊干貞), who helped found a state named Datianxing (大天興) (928–929).