Misc: in which continent would you find the lena river?

Questions

North American Indian, Sitting Bull, died on 15 December?

St Nicholas, the original Father Christmas, is the patron saint of thieves, virgins and communist?

______ is home of the Fairy Investigation Society?

People in Siberia often buy ____ frozen on a stick?

Princess Ann was the only competitor at the 1976 Montreal Olympics that did not have to undergo a ____ test?