There have been 3 main aviation companies in Canada as far as I
can tell. Bombardier Aerosace, De Havilland Canada and Canadair. De
Havilland Canada created the DHC 6,7 and 8 series but De Havilland
Canada where bought by bombardier so they are now made under
bombardier but are still reffered to as DHC-8-Q400, DHC-6-700 etc.
Canadair began production of the regional jet series and they to
where bought by Bombardier Aerosace and are manufactures by them
but like De Havilland Canada they are still produced under there
old name CRJ-1000 (Canadair Regional Jet - 1000)