In 2084, the United Americas was formed. It encompassed the United States, Canada, Mexico, and Central America. On January 1, 2085, the 'United Earth Summit' was commenced in Geneva and attended by Australia, China, the European Federation, Japan, New Zealand, the Russian Republic, South Africa, and the United Americas. The nations attending the summit proposed that the United Nations Constitution be radically ratified. These proposals in effect dissolved the UN, replacing it with the United Earth Federation (UEF), an economic/political conglomerate committed to the goal of uniting the nations of Earth in preparation for the colonization of the planet Mars and the rest of the solar system.