21. Boabdil was held prisoner here in 1483 until he promised to make Granada a tributary state . 22. Ruling over nearby tributary states often by appointing sons of the Kongo kings to head these states. 23. Due to its dominance during the 19th century Vietnam regards Cambodia and Laos as vassal tributary states . 24. In 1753 the tributary states of Cochin collectively known as Karappuram and Alangad were ceded to Travancore. 25. When Srivijaya in Chaiya extended its sphere of influence, those cities became tributary states of Srivijaya. 26. Ayotlan was a state prior to the Spanish incursion which had tributary states at Tlepantequipa and Tlaquitetequi. 27. According to some historians, Granada was a tributary state to the Kingdom of Castile since that year. 28. However, the Lanna Kingdom was weakened and became a tributary state of the Taungoo Dynasty in 1558. 29. Radwan and Tancred frequently came into conflict, until Tancred reduced Aleppo to a tributary state in 1111. 30. Tributary states , usually on the periphery of the Ottoman Empire, were under vassalage in different forms.
