Based on the clue 'at the congress of vienna the duchy of parma was g...', what is the answer?

What is associated with: at the collapse of this mans empire in 1814 louis xviii the bourbon dynasty were restored to t… What is associated with: at the columbian exposition in 1893 this tall amusement park ride had everyone going in circle… Based on the clue 'at the concert for bangladesh george got this guit...', what is the answer? Based on the clue 'at the congress of vienna in a contest instigated ...', what is the answer? Based on the clue 'at the congress of vienna william i of the netherl...', what is the answer? Based on the clue 'at the coroners office in our nations capital dc i...', what is the answer? What is associated with: at the council of clermont in 1095 urban ii proclaimed the 1st crusade against this group of i… Based on the clue 'at the count of 7 all good children go there', what is the answer?