United Earth File:Seal of United Earth.svg Founded: Dissolved: Location: Affiliation: Capital: Head of State: Head of Government: Legislature: Judiciary: Major Species: Military: Intelligence Service: Language: Currency: United Earth was a planetary state created through the unification of Earth in the 22nd century, following First Contact with Vulcans in 2063. United Earth continued to exist as a member world of the United Federation of Planets when Earth helped found that interstellar state in 2161. (Star Trek: First Contact; Star Trek: Enterprise)