Empire, internationalism, and the campaign against the traffic in women and children in the 1920s.

This article assesses the inter-war campaign against trafficking in women and children, with a particular focus on the leading role played by British and British-dominated voluntary associations. This humanitarian campaign was conducted by social relief organizations such as the Association for Moral and Social Hygiene (AMSH) and the International Bureau for the Suppression of the Traffic in Women and Children (IBSTWC). While organized opposition to trafficking in persons was not new, these groups consciously 'internationalized' their advocacy and lobbying efforts in the 1920s and 1930s. Although their work against trafficking in the Straits Settlements, or the prostitution rings operating in the Mediterranean, was driven in part by the desire to protect Britain's national prestige, their moral impetus and their cooperation with non-British bodies reflected wider international concerns. The article also explores the use of public diplomacy as a new political tool, with a particular focus on the public-private cooperation evident in the League of Nations' work to combat the trade. Finally, the article advances some conclusions as to why British women's political organizations in particular were some of the earliest 'internationalists', how successful internationalists were in combating transnational social problems, and to what extent inter-war internationalists established a precedent for the subsequent growth of international social relief organizations.