Unlike provinces whose powers are constitutionally guaranteed, territories receive their authority through federal legislation, making them fundamentally subject to federal parliamentary control. This means the federal government can theoretically alter, expand, or restrict territorial powers by amending the relevant acts (Yukon Act, Northwest Territories Act, Nunavut Act). In practice, devolution agreements have progressively transferred province-like powers to territorial governments, including control over public lands, resources, and most provincial-type responsibilities. However, territories cannot unilaterally expand their powers as provinces sometimes can through constitutional interpretation. The federal-territorial relationship continues evolving as territories gain more autonomy while remaining constitutionally distinct from provinces.