against the provincial government. Section 91(24) of the Constitution Act, 1867 ("British North America Act 1867") gives the federal government exclusive jurisdiction over First Nations, and thus the exclusive ability to extinguish Aboriginal title. Section Thirty-five of the Constitution Act, 1982 explicitly recognized and preserved aboriginal rights. R. v. Guerin (1982), the first Supreme Court of Canada decision handed down after the Constitution Act 1982, declared that Aboriginal title was sui generis and that the federal government has a fiduciary duty to preserve it. R. v. Simon (1985) overruled R. v. Syliboy (1929) which had held that Aboriginal peoples had no capacity to enter into treaties, and thus that the Numbered Treaties were void. A variety of non-land rights cases, anchored on the Constitution Act 1982, have also been influential. Delgamuukw v. British Columbia (1997) laid down the essentials of the current test to prove Aboriginal title: "in order to make out a claim for [A]boriginal title, the [A]boriginal group asserting title must satisfy the following criteria: (i) the land must have been occupied prior to sovereignty, (ii) if present occupation is relied on as proof of occupation pre-sovereignty, there must be a continuity between present and pre-sovereignty occupation, and (iii) at sovereignty, that occupation must have been exclusive." Subsequent decisions have drawn on the fiduciary duty to limit the ways in which the Crown can extinguish Aboriginal title, and to require prior consultation where the government has knowledge of a credible, but yet unproven, claim to Aboriginal title. In 2014 the Supreme Court ruled unanimously for the plaintiff in Tsilhqot'in Nation v. British Columbia. Rejecting the government's claim that Aboriginal title applied only to villages and fishing sites, it instead agreed with the First Nation that Aboriginal title extends to the entire traditional territory of an indigenous group, even if that group was semi-nomadic and did not create settlements on that territory. It also stated that governments must have consent from First Nations which hold Aboriginal title in order to approve developments on that land, and governments can override the First Nation's wishes only in exceptional circumstances. The court reaffirmed, however, that areas under Aboriginal title are not outside the jurisdiction of the provinces, and provincial law still applies. Japan In 2008, Japan gave partial recognition to the Ainu people. However, land rights were not given for another eleven years. In 2019, Japan fully recognised the Ainu people as