|years:|| 2249 2250 2251 2252 2253 2254 2255
|decades:||2220s 2230s 2240s 2250s 2260s 2270s 2280s|
|centuries:||22nd century - 23rd century - 24th century|
- Starship USS Xenophon's Fleet Captain Garth of Izar's standoff against Klingon Admiral Kkorhetza at the First Battle of Axanar, in the Axanar system, leads to the declaration of the Four Years War between the Federation and the Klingon Empire. 
- Garth is victorious against Kkorhetza at the Second Battle of Axanar. 
- The Battle of Andromeda is fought. 
- The Battle of Genmarx is fought. 
- The Encounter at Lea occurs. 
- Sanara Dadari of Earth is elected as the ninteenth President of the United Federation of Planets, succeeding Jacob Varis of Arcturus. She assumed office in 2253. 
- Atreos IV (aka Efros) is admitted into the Federation. 
- Hikaru Sulu sneaks on board the USS Aerfen, meets Captain Hunter and is given a tour of the ship. 
- A transport crashes on Thasus leaving three-year old Charlie Evans as the only survivor.
- Zebulon Carter's journal is found on Vulcan.
References and NotesEdit
- ↑ 1.0 1.1 1.2 1.3 1.4 FASA RPG module: The Four Years War
- ↑ TOS novel: Enterprise: The First Adventure
- ↑ ST website: Startrek.com
- ↑ ST reference: Federation: The First 150 Years
| A Choice of Catastrophes|
Chapter 9 - "Sixteen Years Ago"
|The Original Series||2252||novel|
Sections 5 & 7
|The Original Series||2252||short story|