The cannabis sector just went from being ice cold to red hot in one day. On Tuesday morning, Canopy Growth Corp (CGC), the largest cannabis company in the world, announced that Constellation Brands (STZ), the third largest US brewer has invested $3.8 billion in Canopy. This is a game changing deal. Its the largest deal in the history of the cannabis industry. It gives Canopy a direct link to Constellation global distribution network into more than 100 countries.