Rance became Governor on the last day of August 1946, and on 27 January 1947 Attlee made an agreement with Aung San that independence would come as soon as possible, with elections in April. British hopes of a smooth handover of power allowing the UK to retain some influence were threatened when Aung San was assassinated in July 1947. Rance's prompt action in making U Nu the Prime Minister within hours is believed to have been a decisive factor in avoiding greater upheaval.