Category
page 1States and territories disestablished in the 1400s
Republic of Pisa
de facto independent state centered on the Tuscan city of Pisa from the late 10th to 15th centuries

Artuqids
The Artuqid dynasty (alternatively Artukid, Ortoqid, or Ortokid; Old Anatolian Turkish: , , pl. ) was established in 1102 as a Turkish principality of the Seljuk Empire. It formed a Turkoman dynasty rooted in the Oghuz Döger tribe, and followed the Sunni Muslim faith. It ruled in Northern Syria and Upper Mesopotamia in the eleventh through thirteenth centuries. The Artuqid dynasty took its name from its founder, Artuk Bey, who was a member of Döger branch of the Oghuz Turks and ruled one of the Turkmen principalities of the Seljuk Empire. Artuk's sons and descendants ruled the three branches i
Tran dynasty
Imperial Vietnamese dynasty (1225–1400)
Dai Viet
Vietnamese monarchy (10th–19th century)

Tamna
Tamna () was a kingdom based on Jeju Island from ancient times until it was absorbed by the Korean Joseon dynasty in 1404, following a long period of being a tributary state or autonomous administrative region of various Korean kingdoms.
Principality of Smolensk
former country
Kingdom of Singapura
small Malay kingdom
Hồ dynasty
Short-lived Vietnamese dynasty from 1400 to 1407.
County of Cerdanya
former country
Margraviate of Antwerp
former country
Kingdom of Gampola
former kingdom in Sri Lanka
County of Bigorre
Bohemian Palatinate
place in Germany