Starfleet Academy: of Star Trek Unlimited

Starfleet Admiral ) Johnny.Nickolas Hans
President of Federation) Harry Lincoln
First Minister of United Earth) Kelly Alison

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

In the Star Trek universe, the Prime Directive of the United Federation of Planets prevents its members from interfering in the cultural development of alien civilizations. This also applies to the primitive Earth of the 20th and 21st centuries.

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

Both the Federation and the Klingons covertly used this technology during Burnham's War to gain an advantage over the other side. The technology was no longer in use by the 2260s.

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

Starfleet Academy Technical Manual 3.0

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

The Spore drive is the common term for a displacement-activated spore hub drive, an organic propulsion system which utilizes the mycelium spores of Prototaxites stellaviatori. It allowed a vessel to instantaneously jump to any point in the universe.

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

The spore engine (Displacement-Activated Spore Hub Drive or spore drive or s-drive) is a form of propulsion that allows you to travel anywhere in the universe in a few seconds. First appeared in the Star Trek: Discovery series.

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

It is possible that this enhanced spore drive is what first caught the attention of the Iconian civilization and led to their becoming a servitor species.
Displacement-activated spore hub drive at Memory Beta, the wiki for licensed Star Trek works

[Starfleet Academy: of Star Trek Unlimited @StarTrekUnlimit]

In Star Trek Online, it is revealed that the Elachi have their own version of the Spore drive that is far superior to the one used by the Glenn and Discovery.