Final answer:
The First Nations (Indians) of Canada use the Aboriginal Nation Model for their system of government.
Step-by-step explanation:
The Indigenous entity that uses the Aboriginal Nation Model for its system of government is the First Nations (Indians) of Canada. According to the Canadian constitution, there are three Indigenous Peoples groups in Canada: First Nations (Indians), Inuit, and Métis. The First Nations (Indians) consist of over 630 First Nation groups, representing 50 Nations and languages. They have an inherent right to self-government and have been seeking greater control over their land, resources, and administration of laws and practices. The Canadian government acknowledged this right in 1995.