Prior to the declaration of the independence of Jamaica, Jamaica was made a West Indies Federation province of the British West Indies, still under the rule of the United Kingdom. The nation entered the federation under the rule of Premier Norman Manley, who also made various constitutional amendments to allow the process of decolonisation to rapidly take place. These amendments also allowed the country to have more self-governing powers and permitted the formation of a cabinet led by a premier. Premier Norman Manley's participation in the West Indies Federation was unpopular and led to the independence of the country on 6 August 1962, and the national anthem selected in July 1962 was officially used from that date.