The introduction of social protection schemes for long-term cares that is assistance with daily living activities in case of extended impairments, constitutes a comparably recent development. Taking a birds-eye perspective, this chapter explores which international interdependencies and national constellations contributed to the establishment of long-term case systems from 1945 to 2010. In particular, we investigate the relevance of channels of horizontal diffusion, that is, geographic proximity, cultural similarity, and colonial ties, the influence of the European Union as well as domestic factors such as problem pressure and women’s political empowerment.