The Traité d'Unification was the legal document that established the existence of United Earth in 2130. Signed in Paris at the Place de la Concorde, future site of the Palais de la Concorde, this historic document served as United Earth's charter, though at least some nations, including Australia, did not become signatories until 2150. (ST novel: Articles of the Federation)
- The TOS novel: Strangers from the Sky called this founding documentation the United Earth Accords, although much of the historical information in that book has been invalidated by subsequent canonical productions.
- The ENT novel: The Good That Men Do has Australia be the last country to join the UE, 15 years prior to the main events of the novel (which is set in 2155).