I should also clarify independence in a subfaction is not meant to be "can do fine on their own."
They can just feed and care for their own people as any local government should be able to. Independence of agriculture is just that. Sure, imports and exports are a big thing. But can you grow the basics to survive?
Independence of technology, again, does not mean you don't import. Means you have local resources to manufacture what your people need
Independence of governance is literally just having a functional local government, such as a damn HOA.
On Earth, that'd be a minimum of a farmer's co-op, a steel mill, and a schoolhouse to form a township, thus having representation in county proceedings. Even if that city's a population under 50. Or state, if there's no relevant county. Point is, the independence clause of the system definition allows small worlds like Tami to stay small and still be represented, cause they have everything they need to function without big oversight.
Does not mean they're military, economically, or socially independent.