SDM 2.0: A Global Dataset on Self-Determination Movements, 1945-2020

SDM 2.0 identifies 502 self-determination movements in 124 countries between 1945 and 2020. The dataset includes time-varying information on the exact claims made by self-determination movements, their involvement in armed conflict with the state, state responses to self-determination movements in the form of concessions and restrictions of ethnic rights, and a range of other concepts for all 502 self-determination movements. Via the GeoSDM extension (Germann, Puglia, and Schvitz 2025), SDM 2.0 also provides geo-spatial data identifying the territories claimed by all 502 self-determination movements, as well as data on a range of attributes of these territories, such as their size, the proximity to international land borders, and their economic value. All coding decisions are justified in an extensive set of coding notes, which is made available as part of the dataset.