Original sentence: All these ancient practices were made illegal by the New Zealand government.All tribes became subjects of the  colonial government in 1840 but full Maori cooperation was not achieved until the late 1884.Efforts were made to give special assistance to Maori society after WW2 during which Maori troops had played their full part.From 1880 Maori had their own elected representatives in parliament.From the 1970s thee was increased pressure from Maori and pakeha society to address unresolved Maori issues.Later this move was seen as controversial.Maori continue to make major contributions to all aspects of New Zealand  society.Maori culture and language  declined in the face of a huge increase in migrant Europeans after 1860 but still persisted amongst Maori who lived mainly in rural areas.Maori was the common language taught and spoken in missionary schools.Maori were given the privilege of being  subjects of the British Empire under the Treaty.Missionaries discouraged what they consider barbaric practices, especially cannibalism, slavery, inter tribal warfare, prostitution and the killing at birth of many female babies.One of the goals of the Young Maori party was to improve the ability of Maori to speak and write English , which they saw as a critical step in developing a modern Maori society.Such moves included Waitangi Tribunal's interpretation of language and culture being included as treasures, to be preserved under the Treaty of Waitangi.These were all western educated men such as Maui Pomare and Sir Apirana Ngata who rose to prominence and sought to modernise Maori society by improving health and education outcomes for their people and at the same time preserve the positive aspects of their culture, especially creative arts
Edited sentence: All tribes were pressed into subjection to the colonial government by the late 19th century.Although Maori were given the privilege of being legally enfranchised subjects of the British Empire under the Treaty, Maori culture and language were actively suppressed by the colonial government and by economic and social pressures from the Pakeha society until efforts were made to preserve indigenous culture starting in the late 1950s and culminating in the Waitangi Tribunal's interpretation of language and culture being included in the treasures set to be preserved under the Treaty of Waitangi.However, despite major achievements towards equality, Maori are still under-represented in many fields