Before the advent of Europeans and the introduction of firearms, the confederations were never very large. Tribe fought with tribe on equal terms; the besieged had an advantage over the besiegers. Every tribe had a natural stronghold, stored with food and water for many weeks, into which it would retire in times of danger. If they did not carry it at the first assault, by surprise, or by treachery from within, the besiegers went home to await a better opportunity, for the slow starvation of a garrison by organized siege had never occurred to any native leader. The largest confederations known to us by tradition--Verata and Thakaundrove--controlled less than ten miles of coast line. With the introduction of gunpowder in 1808 native wars became far more destructive. The powerful chiefs immediately doubled their power, and yet Thakombau, the head of the most powerful confederation of all, even in the zenith of his power, never ruled directly over more than fifteen thousand people, though, undoubtedly, he could bring influence to bear upon half the group.
[Illustration: Bringing first fruits to Mbau.]
The development of autocracy followed certain well-defined lines. At first the chief was priest and king after the order of Melchisedec of the Ammonite city, Jebus--that is to say, he received divine honours while wielding the temporal authority. But as the tribe grew the temporal power became irksome to him. The tradition of the founding of the temporal line in Tonga about the beginning of the seventeenth century throws the clearest light upon the origin of the spiritual and temporal lines. A king of Tonga had goaded his people into assassinating him; and his son, after avenging his murder, sought to put a buffer between himself and his rebellious subjects by delegating his executive power to his younger brother, reserving to himself all the solid advantages of his high station without any responsibilities. Safe from popular outbreak, he began to enjoy increased veneration owing to the more rigid tabu that hedged him in. In another case preserved by tradition the temporal power was founded by the indolence of the supreme chief. In order to rid himself of the cares of government, he constituted his brother his hereditary minister, and bequeathed to his descendants an ornamental and dignified retirement. The Mikado and the Shogun are analogues of the Roko Tui and the Vunivalu.[34]