Manitoba Defeated Provincial Egg Barriers

During Canada's chicken and egg war, protectionist regulations in Ontario and Quebec restricted Manitoba's cross-provincial sales of poultry and eggs. Manitoba deliberately copied Quebec's egg-marketing scheme and proposed it as its own, then asked the Manitoba Court of Appeal to rule on its constitutionality. When the court declared the regulations unconstitutional, Manitoba appealed its intended loss to the Supreme Court of Canada. In 1971, the Supreme Court ruled that interprovincial trade belonged exclusively to federal jurisdiction, making similar provincial trade barriers unconstitutional across Canada.

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