Some Key Dates in Canadian History 1818 Canadian border defined as the 49th parallel 1851 Britain transfers control of the postal system to Canada 1864 September- Charlottetown Conference October- Quebec Conference 1866 London Conference- which passes resolutions which are redrafted as the BNA act 1867 Confederation, British North America Act: Ontario, Quebec, Nova Scotia & New Brunswick 1870 Manitoba enters Confederation Northwest Territories enters Confederation 1871 British Columbia enters Confederation 1873 Prince Edward Island enters Confederation 1898 Yukon enters Confederation 1905 Saskatchewan enters Confederation Alberta enters Confederation 1918 Ottawa Agreement,- Preferential trade between Commonwealth Nations 1920 Canada joins League of Nations 1926 The Balfour Report defines British Dominions as autonomous and equal in status1931 The Statue of Westminster authorizes the Balfour report, granting Canada full legislative authority in both internal and external affairs. The Governor General becomes the Canadian representative of the Crown 1939 Canada declares war on Germany separately from Britain 1945 Canada joins UN 1949 Newfoundland enters Confederation Canada joins NATO 1965 New Canadian flag 1980 "O Canada" adopted officially as National Anthem 1982 Canada gains a new constitution and Charter of Rights and Freedoms 1999 Nunavut is created by dividing the Northwest Territories