The term Great powers tends to be a historic term originating in the 19thC whereas the term Superpower originated in 1944. Great Powers and Superpowers were dominant at different historical periods. The term ‘great power’ originates from the 19thC and the Congress of Vienna is seen by many to have recognised the earliest Great Powers as Austria, France, Great Britain, Prussia and Russia whereas the term Superpower is a far more modern term which originated with William Fox in 1944. Great powers tended to be considered states that held some elements of significant population, territory, resources, economic strength and military strength whereas Superpowers were considered to hold all of the characteristics of Great Powers as well as ideological significance and, eventually, nuclear weapons capability. Unlike Great Powers, the Superpowers were able to use ideology as a form of influence or control over their areas of control. The United States was seen as the leading liberal democratic capitalist state and the Soviet Union was considered to be the leading advocate for communism. Great powers generally considered to be able to project power beyond their own geographical region whereas Superpowers tend to be considered to hold global power projection. Great Powers like Great Britain, France and Germany tended to have interests and influence beyond their immediate region but with some restriction whereas Superpowers had sufficient economic and military strength to be able to project power in every part of the world, often through leadership of global alliances or through treaties and agreements like NATO or the Warsaw Pact or Comintern. Great powers tended to be linked with the concept of multipolarity whereas Superpowers seemed to apply predominantly to just two states - bipolarity. The Great Power period is considered to be a clear example of multipolarity which some political theorists consider to be more or less dangerous than the period in which Superpowers were dominant and which is generally described as a period of bipolarity in which US and Soviet Union dominance was so advanced as to render other states of relative insignificance. Great powers tended to impact on particular areas of the globe with other areas not truly affected whereas Superpowers had a global reach and impact and most global events were impacted on by superpowers or considered in terms of the superpower interest and competition and the actions of all other states tended to be influenced by the superpowers. The Great power period was characterised by shifting alliances and agreements between several states with corresponding impact on global security whereas the Superpowers tended to have fixed alliances and an absolute focus on a single rival clashed over certain areas of territory, Superpowers clashed globally in areas such asKorea, Vietnam, Afghanistan, Berlin and Cuba and superpowers were so influential that no significant action could be taken by members of the global community without considering the positions of the superpowers.