States and territories established in the 550s

(907-1805) duchy of Holy Roman Empire

Chenla or Zhenla (; , ) is the Chinese designation for the vassal of the kingdom of Funan preceding the Khmer Empire that existed from around the late 6th to the early 9th century in Indochina. The name was still used in the 13th century by the Chinese envoy Zhou Daguan, author of The Customs of Cambodia. It appears on the Mao Kun map. However, modern historiography applies the name exclusively to the period from the late 6th to the early 9th century. This period of Cambodian history is known by historians as the Pre-Angkor period. It is doubted whether Chenla ever existed as a unitary kingdom

Spania () was a province of the Eastern Roman Empire from 552 until 624 in the south of the Iberian Peninsula and the Balearic Islands. It was established by the Emperor Justinian I in an effort to restore the western provinces of the Empire.

Chinese dynasty (555-587)

Italian duchy (554 – ca. 752)