In sociology, institutionalisation (or institutionalization) is the process of embedding some conception (for example a belief, norm, social role, particular value or mode of behavior) within an organization, social system, or society as a whole. The term may also be used to refer to committing a particular individual or group to an institution, such as a mental or welfare institution. The term may also be used in a political sense to apply to the creation or organization of governmental institutions or particular bodies responsible for overseeing or implementing policy, for example in welfare or development. During the period of the industrial revolution in Europe many countries went through a period of "institutionalization", which saw a large expansion and development of the role of government within society, particularly into areas seen previously as the private sphere. Institutionalization is also seen as an important part of the process of modernization in developing countries, involving again the expansion and improved organization of government structures.