Crown-Indigenous Relations and Northern Affairs Canada (CIRNAC) is the federal department responsible for managing the government's relationship with Indigenous peoples and overseeing northern development. Created in 2017 when Indigenous and Northern Affairs Canada was split into two departments, CIRNAC handles treaty negotiations, land claims, self-government agreements, and advancing reconciliation. It also addresses northern issues including territorial governance, Arctic sovereignty, climate change adaptation, and resource development in Canada's three territories. The department works alongside Indigenous Services Canada, which focuses on service delivery. CIRNAC plays a central role in implementing the Truth and Reconciliation Commission's Calls to Action and the United Nations Declaration on the Rights of Indigenous Peoples.