The document summarizes the development of national initiatives and European policies for rare diseases over the past few decades. It outlines key events and documents that have recognized rare diseases as a public health priority in Europe requiring transnational cooperation. These include the establishment of national plans and centers of expertise in many European countries from the 1980s onward, as well as European regulations, recommendations, and programs to support research, care coordination, and patient organizations. However, it notes ongoing challenges around decentralization, resources, and sustainability that require continued supportive policies.