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Events on Friday 31 October 1873 1
1873Vienna World's FairWeltausstellung 1873 opens in Austria-HungaryEmperor Franz Joseph I opened the World's Fair in Vienna on 1 May 1873, the first world's fair held in a German-speaking country. A cholera outbreak and the concurrent stock market crash hurt attendance, but the fair still drew millions of visitors from around the globe before closing on 31 October.