Colonialism, at least as it is generally defined in the United Nations as Western rule of non-metropolitan areas, is rapidly being brought to a close. As a consequence, within a few years some of the activities of the United Nations will be reduced to almost insignificant proportions. Seven of the eleven territories that were once included within the trusteeship system have already achieved self-government or independence, and another, Ruanda-Urundi, will soon attain that goal. Unless new territories are added, only Nauru, New Guinea, and the Pacific Islands will remain under trusteeship. The list of territories which according to the General Assembly are subject to the provisions of Chapter XI of the Charter has not been cut as drastically, but in terms of the number of people involved, the reduction is equally impressive. Even with the high rate of population growth and the addition of the Spanish and Portuguese dependencies, the number of people living in such areas is about one-fifth of the 1946 figure of 215,000,000. With a few important exceptions such as Kenya, Uganda, Nyasaland and the Rhodesias, and Angola and Mozambique, the territories which in the UN's view “have not yet attained a full measure of self-government” are small and have populations of less than one million. It has already been recommended that the future of the Department of Trusteeship and Information from Non-Self-Governing Territories and the possibility of allocating its duties to other departments be reviewed in the light of these developments.