How to Say "parent state" in Spanish
The Spanish word for “parent state” is “metrópoli” — C1 level.
English → SpanishC1
nounC1formal
the governing country of an empire

Examples
Las noticias tardaban meses en llegar desde la metrópoli a las colonias.
News took months to arrive from the mother city to the colonies.
The Plural Form
The plural of 'metrópoli' is 'metrópolis'. Notice that the word looks almost the same but adds an 's'.
Related Translations
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