I have a project with similar aims: <a href="https:&#x2F;&#x2F;github.com&#x2F;commerceguys&#x2F;addressing" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;commerceguys&#x2F;addressing</a><p>It uses the Google dataset, which is under the public domain.
Might make sense to compare formats?<p>Btw, I love how your worldwide.yaml, both the deduplication and the redirection for subterritories (such as Vatican City).