What do you think was the effect on the equilibrium price and quantity of marijuana when its sale and consumption were legalized in Canada? Did the Supply Curve shift, and if so, to which direction? How about the Demand curve? Did it shift, and if so, to which direction? What happened to price and quantity exchanged?What do you think was the effect on the equilibrium price and quantity of marijuana when its sale and consumption were legalized in Canada? Did the Supply Curve shift, and if so, to which direction? How about the Demand curve? Did it shift, and if so, to which direction? What happened to price and quantity exchanged?