I can see another issue in that list: for half of the entries, it displays the state but not the country, and for the other half, it displays the country but not the state (or its local equivalent). Given that there are things like cities with the same name but within different states in the same country (a quick web search tells me that, in my country, there are many cities like that), and even states named identically to an unrelated country, it's not hard to see how this could get confusing.

(Edit: here is a full list of homonym cities in my country: https://www.embrapa.br/manual-de-referenciacao/anexo-cidades...)