How is government power and authority divided between the federal government and Canada's provinces and territories? The federal government and territorial governments share many powers. ;The federal government and territorial governments share many powers. ;The federal government and provincial governments share many powers. ;The territorial governments maintain all power and authority. ;The federal government maintains all power and authority.

The government power and authority divided between the federal government and Canada's provinces and territories is that "The federal government and provincial governments share many powers."

This is evident in the fact that, based on the Canadian Constitution Act, 1867, the territorial governments are under federal control. Whereas, Provincial governments obtain their legislative authority directly from the Constitution.

Hence, in this case, the correct answer is "The federal government and provincial governments share many powers."