Given this paragraph about London, give me a reason why the London Docklands became a focus for regeneration in the 1980s.
Greater London's population declined in the decades after the Second World War, from an estimated peak of 8.6 million in 1939 to around 6.8 million in the 1980s. The principal ports for London moved downstream to Felixstowe and Tilbury, with the London Docklands area becoming a focus for regeneration, including the Canary Wharf development. This was born out of London's increasing role as an international financial centre in the 1980s. The Thames Barrier was completed in the 1980s to protect London against tidal surges from the North Sea.
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One reason why the London Docklands became a focus for regeneration in the 1980s is that London had an increasing role as an international financial centre.
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