The UAP initially governed in its own right , but in 1940 formed a coalition with the Country Party under Arthur Fadden .
Menzies had become UAP leader ( and thus prime minister ) in 1939 , following the death of Joseph Lyons .
The UAP initially governed in UAP 's own right , but in 1940 formed a coalition with the Country Party under Arthur Fadden .
Menzies had become UAP leader ( and thus prime minister ) in 1939 , following the death of Joseph Lyons .