Official attempts to address the overcrowded housing began at the beginning of the 20th century under the London County Council. World War II devastated much of the East End, with its docks, railways and industry forming a continual target, leading to dispersal of the population to new suburbs, and new housing being built in the 1950s. During the war, in the Boroughs making up Tower Hamlets a total of 2,221 civilians were killed and 7,472 were injured, with 46,482 houses destroyed and 47,574 damaged. The closure of the last of the East End docks in the Port of London in 1980 created further challenges and led to attempts at regeneration and the formation of the London Docklands Development Corporation. The Canary Wharf development, improved infrastructure, and the Queen Elizabeth Olympic Park mean that the East End is undergoing further change, but some of its districts continue to contain some of the worst poverty in Britain.