A vassal state is any
state that has a mutual obligation to a superior state or empire, in a status similar to that of a
vassal
A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain ...
in the
feudal system
Feudalism, also known as the feudal system, was a combination of legal, economic, military, cultural, and political customs that flourished in medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of structuring socie ...
in
medieval
In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of World history (field), global history. It began with the fall of the West ...
Europe. Vassal states were common among the empires of the
Near East
The Near East () is a transcontinental region around the Eastern Mediterranean encompassing the historical Fertile Crescent, the Levant, Anatolia, Egypt, Mesopotamia, and coastal areas of the Arabian Peninsula. The term was invented in the 20th ...
, dating back to the era of the
Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
ian,
Hittite, and
Mitanni
Mitanni (–1260 BC), earlier called Ḫabigalbat in old Babylonian texts, ; Hanigalbat or Hani-Rabbat in Assyrian records, or in Ancient Egypt, Egyptian texts, was a Hurrian language, Hurrian-speaking state in northern Syria (region), Syria an ...
conflict, as well as in
ancient China
The history of China spans several millennia across a wide geographical area. Each region now considered part of the Chinese world has experienced periods of unity, fracture, prosperity, and strife. Chinese civilization first emerged in the Y ...
.
The relationships between vassal rulers and empires were dependent on the policies and agreements of each empire. While the payment of
tribute and military service was common amongst vassal states, the degree of independence and benefits given to vassal states varied. Today, more common terms are
puppet state
A puppet state, puppet régime, puppet government or dummy government is a State (polity), state that is ''de jure'' independent but ''de facto'' completely dependent upon an outside Power (international relations), power and subject to its ord ...
,
protectorate
A protectorate, in the context of international relations, is a State (polity), state that is under protection by another state for defence against aggression and other violations of law. It is a dependent territory that enjoys autonomy over ...
,
client state,
associated state, or
satellite state
A satellite state or dependent state is a country that is formally independent but under heavy political, economic, and military influence or control from another country. The term was coined by analogy to planetary objects orbiting a larger ob ...
.
Historical examples
Ancient Egypt
The reign of
Thutmose III (1479 BC – 1425 BC) laid the foundations for the systems that functioned during the Amarna period of
Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
.
Vassal states in the
Levant became fully integrated in Egypt's economy with the construction of harbours – allowing for greater communication and collection of tax between Egypt and its vassal states during this period.
Much of what is known about Egypt's vassal states from the reigns of
Amenhotep III and
Tutankhamun (1390 BC – 1323 BC) stems from the Amarna letters
– a collection of 350 cuneiform tablets.
The different ways vassal rulers communicated with the
Pharaoh
Pharaoh (, ; Egyptian language, Egyptian: ''wikt:pr ꜥꜣ, pr ꜥꜣ''; Meroitic language, Meroitic: 𐦲𐦤𐦧, ; Biblical Hebrew: ''Parʿō'') was the title of the monarch of ancient Egypt from the First Dynasty of Egypt, First Dynasty ( ...
via grovelling and obsequiousness is a key method of extrapolating relationships between Egypt and vassal states.
Egypt's key vassal states were located on the northern frontier, and included states such as
Nuhašše,
Qatna, and
Ugarit. These were located on the fringes of the territory claimed by Egypt and were a potential threat from acting with the Hittites in
Anatolia
Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
, or the
Mitanni
Mitanni (–1260 BC), earlier called Ḫabigalbat in old Babylonian texts, ; Hanigalbat or Hani-Rabbat in Assyrian records, or in Ancient Egypt, Egyptian texts, was a Hurrian language, Hurrian-speaking state in northern Syria (region), Syria an ...
in
Iraq
Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...
and
Syria
Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
.
Due to these vassal states’ distance from the
Nile
The Nile (also known as the Nile River or River Nile) is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa. It has historically been considered the List of river sy ...
, and their value as a buffer zone from rival kingdoms, these states appeared to have a more high-status relationship with the Pharaoh and Egypt.
These states could also solicit the Pharaoh for various requests. The fulfilment of these asks by Egypt may have served the purpose of ensuring the loyalty of these distant vassal states.
However, these vassal states were claimed by the Hittite Empire following the death of
Akhenaten
Akhenaten (pronounced ), also spelled Akhenaton or Echnaton ( ''ʾŪḫə-nə-yātəy'', , meaning 'Effective for the Aten'), was an ancient Egyptian pharaoh reigning or 1351–1334 BC, the tenth ruler of the Eighteenth Dynasty of Egypt, Eig ...
(1353 BC – 1336 BC) and were never reclaimed.
Under
Ramesses II
Ramesses II (sometimes written Ramses or Rameses) (; , , ; ), commonly known as Ramesses the Great, was an Pharaoh, Egyptian pharaoh. He was the third ruler of the Nineteenth Dynasty of Egypt, Nineteenth Dynasty. Along with Thutmose III of th ...
(1279 BC – 1213 BC), Egypt engaged in several military campaigns against the Hittites, eventually capturing the kingdoms of
Kadesh and
Amurru by taking advantage of growing problems in the Hittite Empire.
In 1258 BC, Ramesses and the Hittite King
Ḫattušili III signed a peace treaty that created a border from north of
Byblos
Byblos ( ; ), also known as Jebeil, Jbeil or Jubayl (, Lebanese Arabic, locally ), is an ancient city in the Keserwan-Jbeil Governorate of Lebanon. The area is believed to have been first settled between 8800 and 7000BC and continuously inhabited ...
to
Damascus
Damascus ( , ; ) is the capital and List of largest cities in the Levant region by population, largest city of Syria. It is the oldest capital in the world and, according to some, the fourth Holiest sites in Islam, holiest city in Islam. Kno ...
between the two empires.
Byblos
The Kingdom of Byblos was significant in linking the worlds of Egypt, the Near East and the Aegean to one another.
It is first attested during the reign of Thutmose III. Through Byblos, the Egyptians had access to products from
Lebanon
Lebanon, officially the Republic of Lebanon, is a country in the Levant region of West Asia. Situated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, it is bordered by Syria to the north and east, Israel to the south ...
and Syria, while also using the kingdom as a base for military activity.
Byblos held religious importance to Egypt, as the local goddess appeared in the form of
Hathor, and was associated with
Isis.
Byblos was also valuable for Egypt as a trade partner, as it allowed the latter to interact with the regional trade connections between Byblos and other small cities.
Byblos seemed to have a large amount of influence itself. Rib-Hadda's letters indicate that Byblos had control over its own territory, until it was taken in conflict with Amurru.
Correspondence with the Kingdom of Byblos is well documented, as the longest interaction between Egypt and a vassal state and spanned a period of 12 years.
The subject king in these letters –
Rib-Hadda – is unique among vassal rulers as his letters are more verbose than other small rulers in the Near East. Despite his loyalty to the Pharaoh, Rib-Hadda never received any meaningful reply from Egypt during times of need and was eventually exiled from his own kingdom by his brother.
While Rib-Hadda's brother was on the throne, Byblos continued to communicate with the Egyptians, although there is some contention over potential alliances between Byblos and Amurru and the Hittite Empire as well.
Interactions between Byblos and Egypt declined in the 12th and 11th centuries BC with the fall of the
New Kingdom. Following Egypt's resurgence, kingdoms such as
Tyre and
Sidon
Sidon ( ) or better known as Saida ( ; ) is the third-largest city in Lebanon. It is located on the Mediterranean Sea, Mediterranean coast in the South Governorate, Lebanon, South Governorate, of which it is the capital. Tyre, Lebanon, Tyre, t ...
were favoured over Byblos.
By the Early Iron Age, Byblos no longer had connections to any great powers in the region. While the city still had religious authority until the
Roman Empire
The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
, it had long lost its economic and political importance.
Hittite Empire

The Hittite Empire incorporated vassal states that extended over much of
Anatolia
Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
and Northern Syria. The addition of vassal states reached its peak under the reigns of
Šuppiluliuma I and
Muršili II in the 14th century BC.
The relationships between the Hittites and their vassal states centered around the Hittite king and the vassal ruler; the terms of their relationship were imposed unilaterally by the former, and accepted by the latter. Whenever a new Hittite king or vassal ruler came into power, a new treaty would be drawn up.
In rare cases, local rulers were given ''kiurwana'' (protectorate status).
While they had distinct privileges such as exemption from tribute they did not have any more freedom of activity than other vassal states. All relations among the regions under Hittite control were strictly determined by the king.
While this led to the belief that contact between vassal states was limited, it has also been thought that such restrictions were limited to the enemies of the Hatti.
The treaties imposed on vassal states came with military obligations, though vassals were also promised military assistance in return. Some treaties also contained details of annual tribute. Treaties were often concluded with a marriage between a vassal ruler and a Hatti princess of the royal family. The princess would hold greater power than other wives of the vassal, and succession would pass down her descendants.
Vassal states were obliged to support and swear fealty to the king's legitimate successors as well. In the event of a usurper taking the throne, the vassal state was freed from all treaty obligations except to help restore a legitimate king to the throne. In doing so, vassal rulers were guaranteed sovereignty from themselves and their successors in their region.
Ugarit
The relations of
Ugarit are the most well-known of the Hittite's vassal states. Sources on Ugarit's role and relationship with the Hittites mostly comes from the Ugarit Archives, with only a few from Hittite sources.
From the sources, it is believed that Ugarit held economic and commercial importance to the Hittite Empire, as many letters and documents relate to trade.
Ugarit also maintained a relationship with Egypt, due to contacts with the Pharaoh's court. Most evidence of this contact comes from the era of the Pax Hethitica, which came after peace between Egypt and the Hittite Empire.
Amurru
Amurru's relationship to the Hittite Empire is attested to in documents recovered from Ugarit and
Hattusa
Hattusa, also Hattuşa, Ḫattuša, Hattusas, or Hattusha, was the capital of the Hittites, Hittite Empire in the late Bronze Age during two distinct periods. Its ruins lie near modern Boğazkale, Turkey (originally Boğazköy) within the great ...
.
Unlike Ugarit, Amurru does not appear to have been a trading centre. Rather, Hitttite sources place importance on the political and military role this kingdom played in the empire, as it was located on the border of Hatti territory and Egypt.
Previously a vassal state of Egypt, the Kingdom defected to the Hittites under the ruler
Aziru. Amurru was loyal to the Hittite Empire from the end of the
Amarna Period until the reign of
Muwatalli II, when they switched allegiances back to Egypt.
The defection was punished with a temporary replacement of the king with a more loyal ruler.
Two marriages occurred between Hittites and Amurru royalty at this time, raising Amurru's importance within the empire.
Amurru's relationship with the Hittite Empire was maintained until the collapse of the latter in the 12th century BC.
A shift from Semitic names used by descendants of Aziru suggest a lasting impact of Hittite influence in the region.
Carchemish
While
Carchemish was a leading power in Syria and delegate for Syrian affairs, not much is known about their interactions with the Great Powers of the region. What is known comes from archives at Hattusa,
Emar, and Ugarit.
When the city was conquered by Suppiluliuma I, he installed his son on the throne
Due to this, the later kings of Carchemish acted as representatives for the Hittite Empire in Syria.
In the 13th century, Carchemish was trading directly with
Assyria
Assyria (Neo-Assyrian cuneiform: , ''māt Aššur'') was a major ancient Mesopotamian civilization that existed as a city-state from the 21st century BC to the 14th century BC and eventually expanded into an empire from the 14th century BC t ...
, and had relations with
Babylonia
Babylonia (; , ) was an Ancient history, ancient Akkadian language, Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Kuwait, Syria and Iran). It emerged as a ...
as well.
Carchemish also survived the end of the Hittite Empire, and became its own city-state in the
Early Iron Age.
In the 8th century BC, it was annexed by the Assyrian Empire.
Neo-Assyrian Empire

The vassal states of the
Neo-Assyrian Empire
The Neo-Assyrian Empire was the fourth and penultimate stage of ancient Assyrian history. Beginning with the accession of Adad-nirari II in 911 BC, the Neo-Assyrian Empire grew to dominate the ancient Near East and parts of South Caucasus, Nort ...
(911 BC – 609 BC) had a unique relationship with the empire they became a part of. While vassal states were necessary to the politics of the empire and connected by administrative and economic means, they are not considered to be ‘properly Assyrian’.
Neo-Assyrian imperial ideology placed importance on unified diversity, and as such vassal states maintained a degree of cultural independence.
While territorial expansion slowed in the 7th century BC, the amount of vassal states increased in number, suggesting a change in foreign policy.
Assyrian kings expressed their hold over vassal states through the collection of flora and fauna from these regions.
The earliest records of this practice date back to
Tiglath-Pileser I
Tiglath-Pileser I (; from the Hebraic form of , "my trust is in the son of Ešarra") was a king of Assyria during the Middle Assyrian period (1114–1076 BC). According to Georges Roux, Tiglath-Pileser was "one of the two or three great Assyri ...
(1114 BC – 1076 BC) in the Middle Assyrian Period. It was revived by
Ashurnasirpal in the Neo-Assyrian Period by creating a garden with specimens from across the empire.
Later Neo-Assyrian rulers would expand on this practice;
Sargon II created a garden that imitated the forests of Northern Syria, while
Sennacherib
Sennacherib ( or , meaning "Sin (mythology), Sîn has replaced the brothers") was the king of the Neo-Assyrian Empire from 705BC until his assassination in 681BC. The second king of the Sargonid dynasty, Sennacherib is one of the most famous A ...
created a swamp that reflected the landscape of Southern Babylonia.
In artistic representations, subjects of vassal states are depicted bringing tribute to Assyria.
These representatives are shown bowing or crouching before the king.
The gifts offered range from horses and monkeys to wineskins.
These scenes of tribute and audience with the king express how vassal states participated in the Neo-Assyrian Empire.
By the 8th century BC, the southern vassal states of the empire saw an increase in settlement. In comparison to the northern regions of the empire – which were previously devastated – these kingdoms become denser and the more prosperous parts of the empire.
The kingdoms west of the
Euphrates
The Euphrates ( ; see #Etymology, below) is the longest and one of the most historically important rivers of West Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia (). Originati ...
river were considered vassal states until the 7th century BC, when they were incorporated into the proper provincial system of the empire, though they still had various degrees of political control depending on location.
In
Judah, there was a further increase in settlement in the 7th century that was greater than the 8th.
It was the same in
Jordan
Jordan, officially the Hashemite Kingdom of Jordan, is a country in the Southern Levant region of West Asia. Jordan is bordered by Syria to the north, Iraq to the east, Saudi Arabia to the south, and Israel and the occupied Palestinian ter ...
, showing that Neo-Assyrian control over the region was a successful period for these kingdoms.
Achaemenid Persia
While the Persians made use of
satraps (appointed Persian governors) rather than vassal rulers in subject regions, there were rare cases of vassal states being utilised.
Herodotus
Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...
writes that negotiations took place between King
Amyntas I of
Macedonia and the Persians after the former's subjugation by the
Achaemenids by 513 BC. The Macedonians became further connected to the Persians as Amyntas married his daughter to a Persian nobleman (Hdt. 5.21.). Under
Darius I, Macedonia was organised into a regular tax district of the Empire (Hdt. 6.44.). Their control over Macedonia is attested in the
DNA inscription at Naqsh-I-Rustam. Amyntas’ son
Alexander I supported
Xerxes I during the Persian invasion of Greece. In 479 BC, the Achaemenid forces were defeated by the Greeks, and Macedonia was no longer considered Greek by other city-states.
Another region considered a vassal state rather than a satrap was
Arabia
The Arabian Peninsula (, , or , , ) or Arabia, is a peninsula in West Asia, situated north-east of Africa on the Arabian plate. At , comparable in size to India, the Arabian Peninsula is the largest peninsula in the world.
Geographically, the ...
. According to Herodotus, they aided
Cambyses II in his invasion of Egypt (525 BC).
As such, Arabia did not become a satrap and was exempt from paying annual tribute.
Instead, they are attested to in the
Behistun inscription and in the
Persepolis Fortification Tablets as providing 1000 talents per year.
In Xerxes’ invasion of
Greece
Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...
, Herodotus mentions the Arabians among the different sections of the Persian Army as being led by
Arsamenes – the son of Darius I.
Despite the size of the Achaemenid Empire, there was efficient communication and connectivity between different regions. The
Royal Road which ran through most of the empire allowed for the movement and sharing of goods, culture, and ideas between the Achaemenid satraps and vassal states.
Ancient China
From the time of the
Zhou dynasty (1046–770 BC) until the
Han dynasty
The Han dynasty was an Dynasties of China, imperial dynasty of China (202 BC9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–206 BC ...
(206 BC–220 AD), a varying number of vassal states existed in Ancient China.
These ranged in size from small city states to vassals which controlled large swathes of territory such as the states of
Chu and
Qi. One of these vassal states would go on to conquer China and unite the country under the first emperor
Qin Shi Huang.
Controversy on Status of Joseon
The
Qing dynasty
The Qing dynasty ( ), officially the Great Qing, was a Manchu-led Dynasties of China, imperial dynasty of China and an early modern empire in East Asia. The last imperial dynasty in Chinese history, the Qing dynasty was preceded by the ...
of China viewed the
Joseon dynasty
Joseon ( ; ; also romanized as ''Chosun''), officially Great Joseon (), was a dynastic kingdom of Korea that existed for 505 years. It was founded by Taejo of Joseon in July 1392 and replaced by the Korean Empire in October 1897. The kingdom w ...
of Korea as an
autonomous vassal state. The Joseon dynasty was autonomous in its internal and external affairs. It was not a colony or dependency of China. However, China abandoned its conventional policy of noninterference toward Korea and adopted a radical interventionist one in the late 19th century.
Yuan Shikai argued that Korea was a dependent "vassal state"; Owen N. Denny argued that Korea was an independent "tributary state".
William W. Rockhill said that calling Korea a vassal state was "misleading". According to Rockhill: "The tribute sent to Peking by all the 'vassal states,' and also by the Tibetans, and the Aboriginal tribes of Western China, is solely a ''
quid pro quo'' for the privilege of trading with the Chinese under extraordinarily favorable conditions." Rockhill argued that Korea viewed China not as a suzerain but as a family head: Korea likened the
Ming dynasty
The Ming dynasty, officially the Great Ming, was an Dynasties of China, imperial dynasty of China that ruled from 1368 to 1644, following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming was the last imperial dynasty of ...
to a father and the Qing dynasty to an older brother. According to Rockhill: "As to the custom of submitting to the Emperor the choice made by the king of an heir to the throne, or of a consort, or informing him of the death of his mother, of his wife, etc., we can look at them as only strictly ceremonial relations, bearing with them no idea of subordination."
Ottoman Empire

The Ottoman Empire (1299–1923) controlled a number of tributary or vassal states in the peripheral areas of its territory. Vassalage took a number of different forms with some states permitted to elect their own leaders. Other states paid tribute for their lands.
During the 18th century, the Ottoman Empire controlled many vassal and tributary states such as the principalities of
Wallachia
Wallachia or Walachia (; ; : , : ) is a historical and geographical region of modern-day Romania. It is situated north of the Lower Danube and south of the Southern Carpathians. Wallachia was traditionally divided into two sections, Munteni ...
and
Moldavia
Moldavia (, or ; in Romanian Cyrillic alphabet, Romanian Cyrillic: or ) is a historical region and former principality in Eastern Europe, corresponding to the territory between the Eastern Carpathians and the Dniester River. An initially in ...
, the
Crimean Khanate, and as far away as the
Aceh Sultanate.
See also
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* (during which vassal kingdoms played a significant role)
References
Sources
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External links
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{{Autonomous types of first-tier administration
Client state