Manitoba Day By 25dhilla 1868 Rupert's Land sold to the Dominion of Canada 1869 Metis National Committee Dec 8, 1869 Provisional Government consisting of English and French speaking Metis Mar 4, 1870 Thomas Scott was executed May 12, 1870 The Manitoba Act was passed Jul 15, 1870 The Act was proclaimed and Manitoba joined the Confederation of Canada as the fifth province Mar 10, 1992 Ottawa officially recognized Louis Riel as the founder of Manitoba