The Hebitians were the first civilisation on the planet Cardassia.
The Hebitians were an advanced sophisticated culture on every level, they used solar technologies but also lived in harmony with nature, valuing the soil and living a sustainable self-sufficient life envied by the surrounding planets.
They were a spiritual people, worshipping the deity Oralius, a tradition that lived on into the Cardassian civilisation in the form of the Oralian Way.
The Hebitian society eventually fell when Cardassia suffered catastrophic climate change, the rainforests and grasslands transformed into desert and scrubland. Disease killed millions; and the survivors formed the militaristic and expansionistic society known as the Cardassians. (DS9 novel: A Stitch in Time)