Aboriginal History Month

The Province of Saskatchewan has proclaimed June 2007 as Aboriginal History Month in recognition of First Nations, Métis and Inuit people's contributions to Canada -- thanks to the notice on the Saskatchewan government web site for this information. The initiatiation comes from RAPA - Regina Aboriginal Professionals Association. I know that in B.C., June 21 is recognised as National Aboriginal Day as it is across the country, but why not a whole month nation-wide?