According to the geopolitical theory, what is the "world island”? It is Australia, which is the only island continent in the world. It is the entire world, which forms a global community that unites us all. It is North, Central, and South America, which are contained between the Atlantic and Pacific Oceans. It is Europe, Asia, and Africa, which are contained between the Atlantic and Indian Oceans. * It is Europe, Asia, and Africa which are contained between the Atlantic and Indian Oceans :)