The Oppression Era took place from GSY 10797 - GSY 11144, lasting 347 years.

During the Oppression era the Pollux Imperium ruled The Twins with an iron fist, oppressing the species of Castor, and treating the Pollux natives very well.

For those in Pollux, life stayed pretty much the same, but in Castor millions, if not billions of sentients were enslaved, and the ones who weren't enslaved lived in constant fear of the Imperium.