Based on the clue 'a needlefish or a scottish verb that means to forc...', what is the answer?

What is associated with: a near riot ensued when boitos opera mefistofele premiered at this milan opera house in 1868? What is referred to by 'a nearer food merchant'? Based on the clue 'a nebraska brick was a square of prairie turf used...', what is the answer? Based on the clue 'a necktie tied a certain way or a horse drawn vehi...', what is the answer? What is referred to by 'a negative in neuberg'? Based on the clue 'a negative vote or a horses whinny', what is the answer? What is referred to by 'a negotiated business deal'? Based on the clue 'a nematode is a roundworm a planarians shape gives...', what is the answer?