of the United Kingdom as one of the world's foremost powers. In recognition of British rule over India, Victoria was declared Empress of India in 1876. However, her reign was also marked by increased support for the republican movement, due in part to Victoria's permanent mourning and lengthy period of seclusion following the death of her husband in 1861. Victoria's son, Edward VII, became the first monarch of the House of Saxe-Coburg and Gotha in 1901. In 1917, the next monarch, George V, changed "Saxe-Coburg and Gotha" to "Windsor" in response to the anti-German sympathies aroused by the First World War. George V's reign was marked by the separation of Ireland into Northern Ireland, which remained a part of the United Kingdom, and the Irish Free State, an independent nation, in 1922. Shared monarchy During the twentieth century, the Commonwealth of Nations evolved from the British Empire. Prior to 1926, the British Crown reigned over the British Empire collectively; the Dominions and Crown Colonies were subordinate to the United Kingdom. The Balfour Declaration of 1926 gave complete self-government to the Dominions, effectively creating a system whereby a single monarch operated independently in each separate Dominion. The concept was solidified by the Statute of Westminster 1931, which has been likened to "a treaty among the Commonwealth countries". The monarchy thus ceased to be an exclusively British institution, although it is often still referred to as "British" for legal and historical reasons and for convenience. The monarch became separately monarch of the United Kingdom, Canada, Australia, New Zealand, and so forth; one person reigning in multiple distinct sovereign states, in a relationship likened to a personal union. George V's death in 1936 was followed by the accession of Edward VIII, who caused a public scandal by announcing his desire to marry the divorced American Wallis Simpson, even though the Church of England opposed the remarriage of divorcees. Accordingly, Edward announced his intention to abdicate; the Parliaments of the United Kingdom and of other Commonwealth countries granted his request. Edward VIII and any children by his new wife were excluded from the line of succession, and the Crown went to his brother, George VI. George served as a rallying figure for the British people during World War II, making morale-boosting visits to the troops as well as to munitions factories and to areas bombed by Nazi Germany. In June 1948 George VI relinquished