Continental drift Continental drift Continental drift is the theory that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed by Alfred Wegener in 1912, but his theory was rejected by many for lack of any motive mechanism. Arthur Holmes later proposed mantle convection for that mechanism. The idea of continental drift has since been subsumed by the theory of plate tectonics, which explains that the continents
Association for the Study of Classical African Civilizations derives its membership from African Americans across class and occupational locations. The organization has since expanded into an international organization, with membership regions representing the continental United States, as well as the Caribbean, Africa, and Europe. ASCAC has four commissions which advance this agenda: education, research, spiritual development, and creative production. Along with creating study groups throughout the world, ASCAC holds an annual conference, operates a youth enrichment program, and is editing a comprehensive history of Africa. The Association for the Study of Classical African Civilizations was initially conceptualized and developed during the First Annual Ancient Egyptian Studies Conference in