[bawolff]

This is canada we are talking about not britian or anywhere else. There is a written constitution (there are also unwritten parts of the constitution but that is beside the point). The written constitution lays out the powers of different levels of government.

https://www.canada.ca/en/intergovernmental-affairs/services/...

Inparticular to quote the gov of canada website:

>"For example, the federal Trade and Commerce power (s. 91(2)) has been interpreted to mean that Parliament can regulate trade generally in Canada, as well as the flow of trade across provincial or international borders, but cannot regulate the operation of particular industries, businesses or professions within provinces. The provincial power over Property and civil rights (s. 92(13)) gives provinces the authority to regulate trade and commerce within their respective territory."