A chiefdom built on the sea
Tonga lies in the southwestern Pacific, among the first islands settled by the Lapita voyagers about 2,800 years ago. Over the centuries, the islands developed a hierarchical society in which a sacred paramount chief, the Tui Tonga, stood at the top. According to Tongan tradition and a body of archaeological evidence, this line of rulers extended its influence outward by sea, reaching neighbouring island groups in western Polynesia. The result is often called a maritime chiefdom, or in older writing, the Tongan empire.
The word “empire” is debated. The Tui Tonga did not govern distant islands with a standing army or a bureaucracy of the kind found in the Assyrian Empire. The evidence points to a looser system of tribute, alliance, marriage ties and prestige, with canoes as the means of connection. Many scholars therefore prefer terms such as maritime chiefdom or sea-borne polity, though opinions differ on how strong the control really was.
The Tui Tonga lineage
Tongan tradition places the beginning of the Tui Tonga line with ’Aho’eitu, said to be the son of the sky god Tangaloa and an earthly woman. Genealogies list a long sequence of rulers after him. Traditional counts, which combine genealogy with estimates of generation length, often place the founding around the 10th century CE, but such dates are approximate, and not all researchers accept them. Radiocarbon dating of monuments and settlements provides another, independent check, and the two lines of evidence broadly agree that a centralised chiefly authority was established in the first half of the second millennium CE.
The Tui Tonga was seen as sacred and descended from the gods, and his rank was distinct from practical power. Over time, much of the day-to-day governance passed to other titled lines, according to tradition. The Tu’i Ha’atakalaua, said to have been created around the 15th century, and later the Tu’i Kanokupolu, whose line was established around the 17th century, took on executive functions. This separation of sacred and executive power is a common theme in Polynesian chiefly systems.
Monuments of Mu’a
The traditional political centre was the area of Mu’a on the main island of Tongatapu, including Lapaha, where large stone-faced burial mounds known as langi were built. These stepped platforms, faced with cut slabs of coral limestone, were royal tombs. Some of the slabs are very large, and some are thought to have been brought from other islands, which would reflect the reach of the chiefs, although the sourcing of particular stones is a matter for specialist study.
Another monument associated with the Tui Tonga is the Ha’amonga ’a Maui, a trilithon of two upright limestone blocks topped by a horizontal lintel, on the northeastern coast of Tongatapu. Tradition credits a Tui Tonga called Tu’itatui with building it, probably in the 13th century, but its date and purpose are not certain. Claims that it served as an astronomical marker are sometimes made, but they are not firmly established.
Reach across western Polynesia
Tongan influence is documented, in varying degrees, in a number of nearby groups:
- Samoa. Samoan traditions describe a period of Tongan dominance that ended with the expulsion of Tongan overlords, though the dating of this event is vague and the story has been shaped by later tellings.
- ’Uvea and Futuna. Tongan cultural and political links are recorded in the oral traditions of these islands in the west.
- Niue and Rotuma. Tongan contacts here appear in tradition and in material evidence.
- Fiji. The eastern Lau group in particular had close ties to Tonga, with ongoing exchange of goods, people and titles in later centuries.
Archaeological evidence includes the movement of stone adzes, whose geological sources can be identified, and of pottery and other objects. Basalt from a source in Samoa has been found in Tonga, for example, which suggests exchange across considerable distances well before the later chiefdom. Compositional studies of this kind show that islands in this region were linked through long-distance contact for many centuries, though they cannot establish political control.
The role of the canoe
Maintaining a sea-based system required seamanship, large canoes and ships’ crews. The Tongans were known to early European visitors for their large double-hulled canoes, which are discussed in the article on voyaging canoes. The technical capacity to cross the gaps between island groups, together with the navigational knowledge described in the article on Polynesian wayfinding, made it possible for chiefs to send tribute collectors, warriors and marriage partners across the sea. Compared with the trading city-states of the eastern Mediterranean, such as the Phoenician city-states, the Tongan system was based more on kinship and ritual authority than on commerce, though exchange of valuable goods was important.
Marriage, tribute and prestige
Among Polynesian chiefs, marriage was a political tool. Tongan rulers formed alliances by marrying women of high rank from other islands, and the children of such unions could claim connections to powerful families in several island groups. Tribute included fine mats, bark cloth, food and other valued items. Such gifts expressed rank and obligation, and in return, the central chiefs gave status and protection. This kind of network is easier to describe in general terms than to measure, since much depends on oral history.
Later history
By the time of sustained European contact in the 18th century, the Tui Tonga title was becoming less central in political terms, and Tonga was divided by rivalries between chiefly lines. In the 19th century, the chief Taufa’ahau, a holder of the Tu’i Kanokupolu title, unified the islands, took the name George Tupou I and established the kingdom that continues in a modified form today. Tonga is notable as the only Pacific island group never to be formally colonised, though it was a British protected state for part of the 20th century.
The story of the Tui Tonga is one part of the larger movement of people and ideas through the Pacific, a subject treated in the overview of Pacific settlement.