As humanity had expanded across the galaxy, it had done so in bursts. A single habitable planet wasn’t enough to warrant establishing an outpost unless the settlers had serious separatist tendencies and could finance their own expedition. Instead, humanity looked for a cluster of star systems with habitable planets in relative proximity to each other. They would identify an anchor world, the place of initial settlement, build the warp gates, and funnel supplies to that world, from which humanity would spread in a starburst to all other planets within reach, forming a sector. The sectors varied
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