British colonial education in Africa during the Interwar Period can be characterized by a push for uniformity, despite colonial authorities demonstrating their acute awareness of the notable differences between the different regions of the Empire. Critical to this, as well, was the universal recognition of nationality as a basic human right under the Covenant of the League of Nations. Colonies were, as outlined by the League of Nations, to be eventually granted independence, with the European powers entrusted as the stewards of “civilization” for their respective colonies. Colonies were only to be allowed independence once they could demonstrate their capacity for self-rule. In former Governor General of Nigeria (1914–1919), Lord Lugard's, 1922 book, "The Dual Mandate in British Tropical Africa" writes,