structural:expansion, stylistic:style_transfer
As research activity

Although individual thinkers such as Immanuel Kant had long recognised the centrality of peace (see Perpetual Peace), it was not until the 1950s and 1960s that peace studies began to emerge as an academic discipline with its own research tools, a specialized set of concepts, and forums for discussion such as journals and conferences. Beginning in 1959, with the founding of the Peace Research Institute Oslo (PRIO), associated with Johan Galtung, a number of research institutes began to appear.