Free at Last
Concept · Stellaris 4.5.2
Free at Last in the Stellaris encyclopedia: - … Pop Happiness: +20%
Free at Last in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
- … Pop Happiness: +20%
- Pop Housing Usage: -25%
- Pop Amenities Usage: -50%
- 
Unity from 
Jobs: +100%
- Pop Consumer Goods Upkeep: -50%
- Egalitarian Ethics Attraction: +50%
- Will expire in 20 Years
The former slaves are finally free from their oppressors.
Source: common/game_concepts (concept_free_at_last_broken_shackles) and localisation/english, Stellaris Cygnus v4.5.2 (9776).