Most sub-Saharan African countries attained international sovereignty, during the 1960s, which was an era characterised by the emergency of development ideology. A certain number of established facts that soon became dogma were distinguished features in this ideology. For example, only the state could take charge of a country's economic development, and economic planning has to be the key instrument in creating successful state policies. Economic development could not only occur by completely destroying traditional structures and by ruthlessly fighting against archaic conceptions that had been steadfastly observed by traditional African societies.