The United Australia Party (UAP) was a conservative political party in Australia that was founded in 1931 as a merger of the Nationalist Party of Australia, the Australian Party, and Australian Labor Party dissidents led by Joseph Lyons. The Labor Party defectors split with James Scullin's government due to their opposition to his economic measures during the Great Depression, and the UAP won a landslide victory in 1931. After 1934, the UAP entered into a coalition government with the Country Party, and the UAP was in power until Robert Menzies resigned in August 1941 in favor of Country Party leader Arthur Fadden, who was defeated in a vote of no-confidence and succeeded by Labor Party leader John Curtin. In February 1945, its members joined the new Liberal Party of Australia.
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