Support for imperial federation waned with World War I which produced greater feelings of national identity in several dominions , Canada and Australia in particular . Defence concerns and problems of imperial cooperation were partially resolved through the system of colonial or Imperial Conferences and with growing sentiments by various dominion governments for greater independence resulting in the Balfour Declaration of 1926 and the Statute of Westminster 1931 . It was last discussed seriously at the governmental level at the 1937 Imperial Conference where it was dismissed
1937 Imperial Conference
1937 Imperial Conference
Imperial Federation