Population Migration / Travel
Grand Archivist Beckett:
The Mun's past is a mystery to me. They appear to have been a very technologically advanced race before their arrival on Pacem. It came down to the Orks to teach them how to survive with the limited technology. Their interactions formed the foundation for what would become the Prime Federation.
The Mun arrived on Pacem at an obvious disadvantage to the Orks. Their reliance on advanced technology before their arrival on Pacem ensured quite a few of their race died before the Orks discovered them. By protecting the physically weak Mun from the wildlife native to Pacem the bond between the two peoples was cemented and very quickly grew into an alliance that would become the two founding members of the Prime Federation.