After the Canadian colonies of France were, via war and treaties, ceded to the British Crown, and the population was greatly expanded by those loyal to George III fleeing north from persecution during and following the American Revolution, British North America was in 1867 confederated by Queen Victoria to form Canada as a kingdom in its own right. By the end of the First World War, the increased fortitude of Canadian nationalism inspired the country's leaders to push for greater independence from the King in his British Council, resulting in the creation of the uniquely Canadian monarchy through the Statute of Westminster, which was granted Royal Assent in 1931. Only five years later, Canada had three successive kings in the space of one year, with the death of George V, the accession and abdication of Edward VIII, and his replacement by George VI.