How to Say "eras" in Spanish
The Spanish word for “eras” is “eras” — B1 level.

Examples
Los dinosaurios vivieron en eras geológicas pasadas.
Dinosaurs lived in past geological eras.
El libro describe las diferentes eras de la historia del arte.
The book describes the different eras of art history.
Estamos entrando en nuevas eras de exploración espacial.
We are entering new eras of space exploration.
Always Feminine
This word is the plural of 'la era', so 'eras' is always feminine. Remember to use feminine words like 'las' or 'muchas' with it: 'las eras pasadas' (the past eras).
Confusing with the Verb
Mistake: “La historia se divide en muchos eras.”
Correction: La historia se divide en muchas eras. The context is your best clue. If the sentence is about history or time, it's this noun. If it's about what 'you' (tú) used to be, it's the verb.
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