Maori first arrived in New Zealand around 1300 AD. European contact began in 1769 when James Cook claimed the land for Britain. In 1840, the Treaty of Waitangi was signed between the British Crown and many Maori chiefs, establishing a framework for cooperation but also conflict over land and culture as European settlement increased. Maori struggled to adapt to the disruption of their traditional way of life but maintained important aspects of their culture and language. The Treaty of Waitangi now represents the founding document of modern New Zealand and its status as one of the most bi-cultural nations in the world, though some issues of sovereignty and land rights continue.