 In the first decade of the 21st century, changes in provincial tax legislation prompted many production companies to move from Toronto to Vancouver.Recent series produced in Vancouver include "The Dead Zone", "Smallville", "Andromeda", "Stargate Atlantis", "Stargate Universe", "The 4400", "Sanctuary" and the reimagined "Battlestar Galactica".Because of the small size of the domestic television market, most Canadian productions involve partnerships with production studios based in the United States and Europe.