|2204 2205 2206 2207 2208 2209 2210|
|2170s 2180s 2190s 2200s 2210s 2220s 2230s|
|22nd century - 23rd century - 24th century|
- Aldebaran Prime becomes the 18th full member of the United Federation of Planets. (TOS: "Where No Man Has Gone Before", FASA, The Worlds of the Federation, Fandom Star Trek Chronology, Kal-Dixas Spaceport, Star Trek: Pendragon)
- The Lincoln-class starship enters service. (Ship Recognition Manual, Volume 4: Starships of the Original Series Era)
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