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LONDON – Vienna has returned to first place in the ranking of the most liveable cities in the world, as it had already been in 2018 and 2019. This was stated by the world index produced by the Economist Intelligence Unit (Eiu), the research unit and analysis affiliated with the English weekly The Economist, which classified the various cities of the globe based on the parameters of livability, safety and social harmony after the first hard impact of Covid.