<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.matumizi ya bangi kama tiba nchini canada yaliruhusiwa tangu mwaka 2001, na waziri mkuu wa canada, justin trudeau, ametumia miaka miwili kubadili sheria kuruhusu matumizi ya bangi kwa burudani.  <response>: canada has had legal medical marijuana since 2001 and prime minister justin trudeaus government has spent two years working towards expanding that to include so-called recreational marijuana. 