Complex sentence: Over the course of thirty years, as the colony grew and technology progressed, territories were slowly drawn up and borders reinforced by immigrants also trying to escape the Federation from other planets such as Mars, Jupiter, and Saturn.
Split into simpler sentences: Over the course of thirty years, as the colony grew and advanced technologically, territories were slowly drawn up. Borders were reinforced by immigrants trying to escape the Federation from other planets such as Mars, Jupiter, and Saturn.