The New Zealand Greens have released an election policy to return stolen land, included privately owned land, to Maori.
Green party co-leader Marama Davidson said "the time is now to be bold" and make historical redress.
"The Aotearoa we know today has been built off of Maori land, much of which was wrongly taken through breaches of Te Tiriti o Waitangi (the Treaty of Waitangi) over the last 183 years," Ms Davidson said.
The signing of the treaty by Maori chiefs and the British crown in 1840, was followed by widespread land confiscation by settlers, in contravention of the document.
Recent governments have attempted to atone for historic wrongdoing through the establishment of the Waitangi Tribunal, in 1975, which makes recommendations on claims brought by Maori tribes.
The government has also resolved claims with individual tribes through the treaty settlement process,
Around 120 settlements have been made, which can involve formal apologies and cultural and commercial redress, including land transfers or cash payments.
Ms Davidson said those settlements "require deep compromises" from Maori.
The Greens policy would establish a new commission of inquiry into land dispossession, and allow the Waitangi Tribunal "to make recommendations in relation to privately owned land, as that land comes on the property market".
"The Green Party will show the political leadership needed to recognise tino rangatiratanga (Maori sovereignty) and repair the harms of the past," Ms Davidson said.
"Colonial land theft has caused severe disconnection and locked whanau (families) in poverty, and this has fed ongoing inequities for Maori within the health, education and justice systems.
"Returning land to tangata whenua (the people of the land) is the right thing to do to begin to address these inequities."
The policy's success would depend on the party's fortunes at the NZ election on October 14.
They would need a Labour-led government to emerge triumphant over the right bloc of National and ACT, and the Greens to argue successfully for the policy in government negotiations.
The Greens have supported the Labour government since 2017 with ministries outside cabinet.
