Much of Singapore's infrastructure had been destroyed during the war, including those needed to supply utilities. A shortage of food led to malnutrition, disease, and rampant crime and violence. A series of strikes in 1947 caused massive stoppages in public transport and other services. However, by late 1947 the economy began to recover, facilitated by a growing international demand for tin and rubber. The failure of Britain to successfully defend its colony against the Japanese changed its image in the eyes of Singaporeans. British Military Administration ended on 1 April 1946, with Singapore becoming a separate Crown Colony. In July 1947, separate Executive and Legislative Councils were established and the election of six members of the Legislative Council was scheduled in the following year.