title: History of Nauru
context: In 1914, following the outbreak of World War I, Nauru was captured by Australian troops, after which Britain held control until 1920. Australia, New Zealand, and the United Kingdom signed the Nauru Island Agreement in 1919, creating a board known as the British Phosphate Commission (BPC). This took over the rights to phosphate mining.[13] According to the Commonwealth Bureau of Census and Statistics (now the Australian Bureau of Statistics), "In common with other natives, the islanders are very susceptible to tuberculosis and influenza, and in 1921 an influenza epidemic caused the deaths of 230 islanders." In 1923, the League of Nations gave Australia a trustee mandate over Nauru, with the United Kingdom and New Zealand as co-trustees.[14][15] In 1932, the first Angam Baby was born.
question: When was Nauru first colonized by Australia?
answers: 1914