Humans may not be able to recreate the visual cacophony of many species in the Allegiance due to a lack of chromatophoric organs,
(though the "body art" some inflict upon themselves both temporarily with chemical compounds on the Dermis, as well as via repeated and what they call "minor" puncturing of said dermal tissue coupled with the injection of colouring chemicals)
But what they can do with their vocal and pneumonic systems in mimetic creation and improvisation is incredible, and now it seems their version of GalStand, often referred to GalSimple, is starting to become the norm on the outer rim due to its ease of use by everyone for communicating -- Adam In Darwin
Communication is... a problem. Most species rely on sound waves, specifically compressing and de-compressing air in rapid oscillation to make specific and unique noise. The form these noises take are as many and varied as the concept of noise itself. Others communicate strictly visually with flashes of light or with movements of their body. Some communicate mostly through scent. Understandably, this has lead to many difficulties and assistive communications devices.
Further problems occurred when linguistic contamination occurred, species picking up other species' words or phrases because they were just so darned useful, mashing them into their own means of communication, and moving onwards from there. Something had to be done, and that something was GalStand. A collection of the most popular, useful, and versatile words and phrases with the pronunciation adjusted so that the most peoples can say them with the least amount of garbling. For those with non-verbal communication, there is GalStand Sight and GalStand Scent. GalStand is relatively easy to translate into GalStand Sight and GalStand Scent.
Then the Humans came along. They had languages with long, complicated histories out of creatively borrowing words from other languages and cultures, and using them for their own nefarious purposes. The creoles fissioned as a direct result. What also emerged was a new, pared-down language with a minimal grammar structure and simple conjunctions of meaning. Humans took one look at the increasingly-complicated GalStand, figured out the minimal possible ways to communicate meaning, and created GalStand Simple. Which, in turn, was quickly pared down to GalSimple.