Based on the clue 'a montana city is named for these on the missouri ...', what is the answer?

Based on the clue 'a monster of a southwestern river 4', what is the answer? What is associated with: a monster opera based on this mary shelley novel premiered in 1990? Based on the clue 'a monster or a way to fish by dragging a line behi...', what is the answer? Based on the clue 'a montagnais is a native american in quebec a mone...', what is the answer? Based on the clue 'a montana park is named for these formations youll...', what is the answer? Based on the clue 'a montgolfier is a louis xvi chair with a back oft...', what is the answer? What is associated with: a month after the bell jar was published in 1963 she took her own life? What is associated with: a month after winning the 1984 olympic marathon she got married added samuelson to her name?