Notable events during the 2340s are the destruction of the Omicron Theta colony by the Crystalline Entity and minor diplomatic successes by the Federation like mediations between the moons of Peliar Zel and in the Klaestron Civil War. Decisive scientific events include the construction of the Soong-type androids Lore and Data as well as the discovery of the Changeling Odo.
- The parents of Amanda Rogers are killed by a tornado. (TNG: "True Q")
- Starfleet integrates communicator functions into the standard uniform badge by 2344. (TNG: "Yesterday's Enterprise", visual reference)