In the US, civil servants and academics such as Woodrow Wilson promoted American civil service reform in the 1880s, moving public administration into academia. However. Until the mid-20th century and the dissemination of the German sociologist Max Weber's theory of bureaucracy there was not much interest in a theory of public administration. The field is multidisciplinary in character,one of the various proposals for public administration's sub-fields sets out six pillars, including human resources, organizational theory, policy analysis and statistics, budgeting,and ethics