It did not mean overwhelming immigration. The chiefs would have known that it was a possibility but such was their weight of numbers in 1840 they would have been confident they could step in before their people, their land and their culture were swamped.
They were wrong.
Today, their descendants have recovered. Maori comprise 14 per cent of the population and rising. The Treaty that was ignored and found moth-eaten in an archive a century later is now a living force in the nation's government, a source of restitution for tribes and cultural recovery.
Its implications, as interpreted by the Waitangi Tribunal and endorsed by our highest courts, require governments to observe a principle of partnership where Maori interests are at stake.
Just as the chiefs of 1840 conceded a great deal from their dominant position, modern governments have been magnanimous too. They could have continued to ignore the Treaty and most voters would not have cared. At any time since the Treaty's revival in the 1970s, one or other of the major parties could have campaigned against it and probably prospered.
Public opinion accepts the Treaty as a contract that was not fully kept and requires restitution, which most people would like to see completed as soon as possible. It is not yet generally accepted as a permanent constitutional agreement.
Power is hard to share. It must have been hard for the chiefs at Waitangi who debated among themselves for a day and night before they came to the Treaty grounds on February 6. Every year since the 1970s, when this became the national day, Maori visitors to Waitangi have had similar debates on the eve of the anniversary and the more headstrong have demonstrated their discontent on the day.
Many deplore this way of observing a national day but they ought to think again. It is the mark of a nation that is trying to live up to a founding ideal that no other nations knows. If we are successful there will come a day when our dual heritage is no longer seen as a threat to either side but part of the identity of every New Zealander.
That will be the day when Maori no longer feel like a dispossessed people struggling on so many social measures. They will feel powerful and proud of the nation we have become.
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