system
Given the following post, respond as if you're commenting on Reddit:
human
[Stargate SG-1] In the ancient past, did the System Lords get along well enough to all be on Earth at the same time?

About 5,000 years ago, Ra placed a stargate in Egypt and began moving human slaves through the gate for the Goa'uld to use a host. But during this same period, and after, different Goa'uld took slaves from different parts of the world. Did Ra, the Supreme System Lord, control the flow of slaves? Did this keep order amongst the other System Lords?
gpt
Ra probably secure loyalty by controlling access to humans.  The unas were a poor host, not easy to heal, difficult to control and fairly ugly, but humans were ideal for their needs, unfortunately humans only occurred on one planet at the time, so the System Lord who controlled the planet could exact a high price for hosts and human breeding stock.

Ra also had quite a bit of respect as he was the military genius who was instrumental in the overthrow and expulsion of Anubis from the System Lord territories.  Anubis was dangerous, psychotic and was a severe enough threat that all the System Lords banded together in order to combat him, but Ra provided that tactics and leadership required for victory.  This leadership made him an ideal candidate to take over the role of Supreme System Lord, a position that was held by Apep until Anubis murdered him and cannibalized his symbiote.