The Brundtland Report, released by the World Commission on Environment and Development in 1987, defined sustainable development and emphasized the importance of balancing social equity, economic growth, and environmental protection. Chaired by Gro Harlem Brundtland, the report led to the creation of Agenda 21, outlining global, national, and local actions for sustainability. Key elements for achieving sustainable development include political, economic, institutional, technological, socio-cultural, and ecological dimensions.