2403

2403 was the 3rd year of the 25th century and the 4th year of the 2400s decade.
== Events ==
;Unspecified date
:After a full-scale Klingon invasion of the Gorn , Gornar, the Klingon-Gorn War ends. Slathis of the Gorn Hegemony swears fealty to the Klingon Empire in exchange for retaining self-rule.
:Sela leads a Romulan and Hirogen fleet to Rator III and assumes control of the Romulan Star Empire.
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