<p>A remarkable figure of British politics between the late Victorian and interwar years, Lord Lansdowne was among the last hereditary aristocrats to wield power by birth. Over the course of a distinguished fifty year career he served as Governor-General of Canada, Viceroy of India, Secretary of State for War, Foreign Secretary and Leader of the House of Lords.<br><br>It was Lansdowne who engineered the crucial changes in British foreign policy a...