Gantu is one of the jewels in Halgon's proverbial crown. With slightly lower gravity than Mannon, escape velocities are lower, and basic transit is easier. It became a shipping hub, with Halgon wresting control of different areas from other regions mainly by buying out interests or strategically trading other holdings. Reflecting Vaasith's and Halgon's long-standing positive associations (longer periods of neutrality and alliance than with other nations), Vaasith pays smaller fees for using the ports and shipping systems.
Gantu is also a smaller industrial hub, with Chibal as its prime mover.
Umamet, the primary starport and its eponymous city, were founded by Vaasith but eventually ended up in primarily Halgon hands.