The conflict culminated in the Parti Québécois government of René Lévesque holding a province-wide referendum on Sovereignty-Association in 1980 that proposed that Quebec would assume all federal powers while maintaining economic links to Canada; it was rejected by 60% of Quebecers. Prime Minister Pierre Trudeau subsequently pushed through the amendment of the constitution with the Canada Act 1982. This was done with the approval of the other provincial governments, but not the government of Quebec.