Originally posted by DarthAnt66
I know this, and I am not mistakened. However, his civil wars failed, and nearly resulted in the destruction of his own Empire. Praise Bastila for not letting him be killed by Darth Revan's might. According to Scourge, Vitiate attacking the Empire during Revan's time would have only resulted in the Republic steamrolling him.
Scourge was not much aware about the condition of the Jedi Order and the Republic.
The reconstituted ancient Sith Empire had become a superpower prior to the event of Mandalorian Wars:
For hundreds of years, the Empire amassed incredible strength while the Emperor secretly plotted from seclusion - his life extended by Sith sorcery. Generations of Imperials lived, worked, and died to hone the Empire's military power. As the years dragged on, hopeful whispers in military training camps guessed that they would be the lucky generation to battle the Republic. But in truth, not even the Dark Council could predict when the Emperor would deem the Empire ripe for retribution.
More;
Finally, Naga Sadow would wage the Great Hyperspace War against the Sith's oldest enemies - the Republic and the Jedi Order - which would have repercussions for centuries, and eventually see the Sith emerge as a galactic power.
&
Their hunt led them to a planet engulfed in endless storms. It was on this world of Dromund Kaas that Revan and Malak discovered the mighty Sith civilization that had been secretly growing in power.
General environment of the Empire:
The Empire is fueled by its massive stock of loyal, devoted and dedicated citizenry. Every man, woman, and child in the Empire is required to work to ensure Imperial success. A military mindset is ingrained in the children from a young age, encouraging competition and rewarding achievement. Young Imperials are analyzed for proficiency before they are assigned to specialized academies, where they further hone their skills in service to the Empire.
Mandatory service demands that all Imperial citizens ultimately pledge themselves to the Imperial war machine. Many enlist with the military, while others become engineers, serve as intelligence analysts, or join the Ministry of Logistics to manage the vast demands of the Empire. Accomplishments are rewarded with power, wealth, and respect.
---
Also, I am not sure how exactly his Civil Wars failed. He did not get the Star Forge but the Republic suffered heavy losses during the Mandalorian Wars and lost much of its military might during the Jedi Civil War, a war that resulted in destruction of the Jedi Order as well. The Republic was so weak by this time that it wasn't equipped to deal with the threat of Sith Triumvirate, forget a superpower.