After the British won the Seven Years' War (1756-1763), they gained control over a large portion of North America, including territories inhabited by various Indigenous peoples. As the new colonial power, the British recognized the need to address First Nations issues for several reasons.
Firstly, the British understood that Indigenous peoples had unique relationships with the land and resources of the territories that they inhabited. The British recognized that they could not simply take control of these lands without acknowledging the sovereignty and rights of the First Nations peoples who lived there.
Secondly, the British recognized that Indigenous peoples were crucial trading partners, both with other Indigenous groups and with European colonizers. Trade with Indigenous groups was essential for the survival of many British colonies, and maintaining positive relationships with First Nations peoples was essential for the continued prosperity of these colonies.
Thirdly, the British recognized that they had a moral obligation to address the injustices that had been inflicted upon Indigenous peoples by previous colonial powers. The British believed that they had a duty to protect and assist Indigenous peoples, and to prevent further harm from being done to them.
Overall, addressing First Nations issues was seen as essential for the success and stability of the new British colonies in North America, as well as for upholding the moral principles of the British Empire.