As world opinion began to favour independence for colonies following World War I, there was an institutionalized collective effort towards decolonization through the League of Nations. Under Article 22 of the Covenant of the League of Nations, a number of mandates were created. The expressed intention was to prepare these countries for self-government, but the mandates are often interpreted as a mere redistribution of control over the former colonies of the defeated powers, mainly the German Empire and the Ottoman Empire. This reassignment work continued through the United Nations, with a similar system of trust territories created to adjust control over both former colonies and mandated territories.