On 17 October 2018 Canada chose to legalize the production, distribution and sale of the most famous and persecuted plant on the planet:the Cannabi.The historic decision of the Government and Parliament manifests a threefold aim:protect public health, prevent youth consumption and counter organised crime while raising law enforcement and judicial system forces from pursuing consumers and small delinquency to focus on more serious crimes.The path through which the legalization of cannabis proved to be a winning bet for the entire Canadian company is traced in "Legal.The model of Canada", starting from the debate prior to the regulation, including the unprecedented legislative context that frames a new productive sector and guarantees its consumers, the role of the therapeutic cannabis industry, the fiscal policy adopted to combat submerged transactions, the data relating to a market literally in bloom and the stimulating prospects that arise when a plant is legalized by the multiple applications for all fields of contemporary industry.