The complex human phenomenon of migration is a challenging one, and throughout history has been considered by many disciplines, including, but not limited to, law, international relations and political science, sociology and anthropology, philosophy, economics, geography and demography and psychology, as well as by multi-disciplinary scholarship. All of this growing body of scholarship has attempted to come to grips with particular aspects of this phenomenon, which has an impact on states, peoples, societies, spaces, cultures, mental states, international organisations and norms.
